78151455510401 has 32 divisors (see below), whose sum is σ = 97317265667328. Its totient is φ = 61110291916800.

The previous prime is 78151455510347. The next prime is 78151455510407. The reversal of 78151455510401 is 10401555415187.

It is not a de Polignac number, because 78151455510401 - 2¹⁰ = 78151455509377 is a prime.

It is a super-2 number, since 2×78151455510401² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (78151455510407) 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, 7382900 + ... + 14519301.

It is an arithmetic number, because the mean of its divisors is an integer number (3041164552104).

Almost surely, 2^{78151455510401} is an apocalyptic number.

It is an amenable number.

78151455510401 is a deficient number, since it is larger than the sum of its proper divisors (19165810156927).

78151455510401 is a wasteful number, since it uses less digits than its factorization.

78151455510401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21902681.

The product of its (nonzero) digits is 560000, while the sum is 47.

The spelling of 78151455510401 in words is "seventy-eight trillion, one hundred fifty-one billion, four hundred fifty-five million, five hundred ten thousand, four hundred one".