78632055251 has 8 divisors (see below), whose sum is σ = 78703335360. Its totient is φ = 78560812008.

The previous prime is 78632055167. The next prime is 78632055277. The reversal of 78632055251 is 15255023687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78632055251 is a prime.

It is a super-2 number, since 2×78632055251² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78602055251) 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, 5763500 + ... + 5777126.

It is an arithmetic number, because the mean of its divisors is an integer number (9837916920).

Almost surely, 2^78632055251 is an apocalyptic number.

78632055251 is a deficient number, since it is larger than the sum of its proper divisors (71280109).

78632055251 is a wasteful number, since it uses less digits than its factorization.

78632055251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18433.

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 78632055251 in words is "seventy-eight billion, six hundred thirty-two million, fifty-five thousand, two hundred fifty-one".