34020870864 has 80 divisors (see below), whose sum is σ = 90201994560. Its totient is φ = 11045422080.

The previous prime is 34020870859. The next prime is 34020870881. The reversal of 34020870864 is 46807802043.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226794 + ... + 345654.

It is an arithmetic number, because the mean of its divisors is an integer number (1127524932).

Almost surely, 2^34020870864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34020870864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45100997280).

34020870864 is an abundant number, since it is smaller than the sum of its proper divisors (56181123696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34020870864 is a wasteful number, since it uses less digits than its factorization.

34020870864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119028 (or 119022 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 34020870864 in words is "thirty-four billion, twenty million, eight hundred seventy thousand, eight hundred sixty-four".