103121839656 has 96 divisors (see below), whose sum is σ = 322600449600. Its totient is φ = 29410859520.

The previous prime is 103121839637. The next prime is 103121839657. The reversal of 103121839656 is 656938121301.

103121839656 is a `hidden beast` number, since 10 + 31 + 218 + 396 + 5 + 6 = 666.

It is a super-2 number, since 2×103121839656² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103121839657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3816076 + ... + 3843003.

It is an arithmetic number, because the mean of its divisors is an integer number (3360421350).

Almost surely, 2^103121839656 is an apocalyptic number.

It is an amenable number.

103121839656 is an abundant number, since it is smaller than the sum of its proper divisors (219478609944).

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

103121839656 is a wasteful number, since it uses less digits than its factorization.

103121839656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659119 (or 7659112 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 103121839656 in words is "one hundred three billion, one hundred twenty-one million, eight hundred thirty-nine thousand, six hundred fifty-six".