78142147026 has 32 divisors (see below), whose sum is σ = 162270086400. Its totient is φ = 25056380160.

The previous prime is 78142146961. The next prime is 78142147073. The reversal of 78142147026 is 62074124187.

It is a super-2 number, since 2×78142147026² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781431 + ... + 875738.

It is an arithmetic number, because the mean of its divisors is an integer number (5070940200).

Almost surely, 2^78142147026 is an apocalyptic number.

78142147026 is an abundant number, since it is smaller than the sum of its proper divisors (84127939374).

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

78142147026 is a wasteful number, since it uses less digits than its factorization.

78142147026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657474.

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 78142147026 in words is "seventy-eight billion, one hundred forty-two million, one hundred forty-seven thousand, twenty-six".