120197638751 has 4 divisors (see below), whose sum is σ = 120380033400. Its totient is φ = 120015244104.

The previous prime is 120197638721. The next prime is 120197638753. The reversal of 120197638751 is 157836791021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120197638751 is a prime.

It is a super-2 number, since 2×120197638751² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120197638751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120197638753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91196336 + ... + 91197653.

It is an arithmetic number, because the mean of its divisors is an integer number (30095008350).

Almost surely, 2^120197638751 is an apocalyptic number.

120197638751 is a deficient number, since it is larger than the sum of its proper divisors (182394649).

120197638751 is an equidigital number, since it uses as much as digits as its factorization.

120197638751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182394648.

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 120197638751 in words is "one hundred twenty billion, one hundred ninety-seven million, six hundred thirty-eight thousand, seven hundred fifty-one".