120991378396 has 36 divisors (see below), whose sum is σ = 259267247400. Its totient is φ = 49124317536.

The previous prime is 120991378379. The next prime is 120991378447. The reversal of 120991378396 is 693873199021.

It is a self number, because there is not a number n which added to its sum of digits gives 120991378396.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16241091 + ... + 16248538.

Almost surely, 2^120991378396 is an apocalyptic number.

It is an amenable number.

120991378396 is an abundant number, since it is smaller than the sum of its proper divisors (138275869004).

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

120991378396 is a wasteful number, since it uses less digits than its factorization.

120991378396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32489666 (or 32489657 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 58.

The spelling of 120991378396 in words is "one hundred twenty billion, nine hundred ninety-one million, three hundred seventy-eight thousand, three hundred ninety-six".