120697891780 has 96 divisors (see below), whose sum is σ = 275584619520. Its totient is φ = 44235072000.

The previous prime is 120697891777. The next prime is 120697891781. The reversal of 120697891780 is 87198796021.

It is not an unprimeable number, because it can be changed into a prime (120697891781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37470570 + ... + 37473790.

It is an arithmetic number, because the mean of its divisors is an integer number (2870673120).

Almost surely, 2^120697891780 is an apocalyptic number.

120697891780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120697891780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137792309760).

120697891780 is an abundant number, since it is smaller than the sum of its proper divisors (154886727740).

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

120697891780 is a wasteful number, since it uses less digits than its factorization.

120697891780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461 (or 6459 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 58.

The spelling of 120697891780 in words is "one hundred twenty billion, six hundred ninety-seven million, eight hundred ninety-one thousand, seven hundred eighty".