120919554056 has 64 divisors (see below), whose sum is σ = 273995688960. Its totient is φ = 48927744000.

The previous prime is 120919553983. The next prime is 120919554101. The reversal of 120919554056 is 650455919021.

It is a super-2 number, since 2×120919554056² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120919554056.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778265 + ... + 920616.

It is an arithmetic number, because the mean of its divisors is an integer number (4281182640).

Almost surely, 2^120919554056 is an apocalyptic number.

It is an amenable number.

120919554056 is an abundant number, since it is smaller than the sum of its proper divisors (153076134904).

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

120919554056 is a wasteful number, since it uses less digits than its factorization.

120919554056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698966 (or 1698962 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 120919554056 in words is "one hundred twenty billion, nine hundred nineteen million, five hundred fifty-four thousand, fifty-six".