29290251668 has 24 divisors (see below), whose sum is σ = 54037208064. Its totient is φ = 13871152800.

The previous prime is 29290251619. The next prime is 29290251701. The reversal of 29290251668 is 86615209292.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507063 + ... + 2518718.

It is an arithmetic number, because the mean of its divisors is an integer number (2251550336).

Almost surely, 2^29290251668 is an apocalyptic number.

It is an amenable number.

29290251668 is a deficient number, since it is larger than the sum of its proper divisors (24746956396).

29290251668 is a wasteful number, since it uses less digits than its factorization.

29290251668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025863 (or 5025861 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 29290251668 in words is "twenty-nine billion, two hundred ninety million, two hundred fifty-one thousand, six hundred sixty-eight".