78146140017685 has 16 divisors (see below), whose sum is σ = 95313084072192. Its totient is φ = 61491776904000.

The previous prime is 78146140017601. The next prime is 78146140017707. The reversal of 78146140017685 is 58671004164187.

It is not a de Polignac number, because 78146140017685 - 2¹³ = 78146140009493 is a prime.

It is a super-2 number, since 2×78146140017685² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 98292010 + ... + 99083860.

It is an arithmetic number, because the mean of its divisors is an integer number (5957067754512).

Almost surely, 2^{78146140017685} is an apocalyptic number.

It is an amenable number.

78146140017685 is a deficient number, since it is larger than the sum of its proper divisors (17166944054507).

78146140017685 is a wasteful number, since it uses less digits than its factorization.

78146140017685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115484.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 78146140017685 in words is "seventy-eight trillion, one hundred forty-six billion, one hundred forty million, seventeen thousand, six hundred eighty-five".