120651266640 has 40 divisors (see below), whose sum is σ = 374018927328. Its totient is φ = 32173671040.

The previous prime is 120651266639. The next prime is 120651266653. The reversal of 120651266640 is 46662156021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251356566 + ... + 251357045.

Almost surely, 2^120651266640 is an apocalyptic number.

120651266640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120651266640 is an abundant number, since it is smaller than the sum of its proper divisors (253367660688).

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

120651266640 is a wasteful number, since it uses less digits than its factorization.

120651266640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502713627 (or 502713621 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 120651266640 in words is "one hundred twenty billion, six hundred fifty-one million, two hundred sixty-six thousand, six hundred forty".