78148656285834 has 16 divisors (see below), whose sum is σ = 156317180126688. Its totient is φ = 26046240836112.

The previous prime is 78148656285829. The next prime is 78148656285919. The reversal of 78148656285834 is 43858265684187.

It is a super-2 number, since 2×78148656285834² (a number of 29 digits) contains 22 as substring.

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, 827763657 + ... + 827858060.

It is an arithmetic number, because the mean of its divisors is an integer number (9769823757918).

Almost surely, 2^{78148656285834} is an apocalyptic number.

78148656285834 is an abundant number, since it is smaller than the sum of its proper divisors (78168523840854).

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

78148656285834 is a wasteful number, since it uses less digits than its factorization.

78148656285834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655629589.

The product of its digits is 2477260800, while the sum is 75.

The spelling of 78148656285834 in words is "seventy-eight trillion, one hundred forty-eight billion, six hundred fifty-six million, two hundred eighty-five thousand, eight hundred thirty-four".