103997991394656 has 108 divisors (see below), whose sum is σ = 314164347741972. Its totient is φ = 32626820803584.

The previous prime is 103997991394643. The next prime is 103997991394727. The reversal of 103997991394656 is 656493199799301.

103997991394656 is a `hidden beast` number, since 1 + 0 + 3 + 9 + 97 + 9 + 91 + 394 + 6 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 624664410 + ... + 624830873.

It is an arithmetic number, because the mean of its divisors is an integer number (2908929145759).

Almost surely, 2^{103997991394656} is an apocalyptic number.

103997991394656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

103997991394656 is an abundant number, since it is smaller than the sum of its proper divisors (210166356347316).

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

103997991394656 is a wasteful number, since it uses less digits than its factorization.

103997991394656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249495333 (or 1249495305 counting only the distinct ones).

The product of its (nonzero) digits is 2678462640, while the sum is 81.

The spelling of 103997991394656 in words is "one hundred three trillion, nine hundred ninety-seven billion, nine hundred ninety-one million, three hundred ninety-four thousand, six hundred fifty-six".