873720051786 has 40 divisors (see below), whose sum is σ = 1967058771744. Its totient is φ = 289859721480.

The previous prime is 873720051779. The next prime is 873720051791. The reversal of 873720051786 is 687150027378.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12746230 + ... + 12814593.

Almost surely, 2^873720051786 is an apocalyptic number.

873720051786 is an abundant number, since it is smaller than the sum of its proper divisors (1093338719958).

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

873720051786 is a wasteful number, since it uses less digits than its factorization.

873720051786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25561048 (or 25561039 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 873720051786 in words is "eight hundred seventy-three billion, seven hundred twenty million, fifty-one thousand, seven hundred eighty-six".