78142162452 has 24 divisors (see below), whose sum is σ = 190259178816. Its totient is φ = 24914892288.

The previous prime is 78142162411. The next prime is 78142162487. The reversal of 78142162452 is 25426124187.

It is a super-2 number, since 2×78142162452² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141561613 + ... + 141562164.

It is an arithmetic number, because the mean of its divisors is an integer number (7927465784).

Almost surely, 2^78142162452 is an apocalyptic number.

It is an amenable number.

78142162452 is an abundant number, since it is smaller than the sum of its proper divisors (112117016364).

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

78142162452 is a wasteful number, since it uses less digits than its factorization.

78142162452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283123807 (or 283123805 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The spelling of 78142162452 in words is "seventy-eight billion, one hundred forty-two million, one hundred sixty-two thousand, four hundred fifty-two".