120642686544 has 40 divisors (see below), whose sum is σ = 313226430400. Its totient is φ = 40012144128.

The previous prime is 120642686543. The next prime is 120642686551. The reversal of 120642686544 is 445686246021.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 120642686493 and 120642686502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120642686543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6305497 + ... + 6324600.

It is an arithmetic number, because the mean of its divisors is an integer number (7830660760).

Almost surely, 2^120642686544 is an apocalyptic number.

It is an amenable number.

120642686544 is an abundant number, since it is smaller than the sum of its proper divisors (192583743856).

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

120642686544 is a wasteful number, since it uses less digits than its factorization.

120642686544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630307 (or 12630301 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 120642686544 in words is "one hundred twenty billion, six hundred forty-two million, six hundred eighty-six thousand, five hundred forty-four".