102155656012 has 96 divisors (see below), whose sum is σ = 205393708800. Its totient is φ = 44198719488.

The previous prime is 102155655991. The next prime is 102155656013. The reversal of 102155656012 is 210656551201.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (102155656013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3414414 + ... + 3444202.

It is an arithmetic number, because the mean of its divisors is an integer number (2139517800).

Almost surely, 2^102155656012 is an apocalyptic number.

It is an amenable number.

102155656012 is an abundant number, since it is smaller than the sum of its proper divisors (103238052788).

102155656012 is a wasteful number, since it uses less digits than its factorization.

102155656012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29923 (or 29921 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 102155656012 in words is "one hundred two billion, one hundred fifty-five million, six hundred fifty-six thousand, twelve".