78285745682137 has 32 divisors (see below), whose sum is σ = 95515200000000. Its totient is φ = 62670442214016.

The previous prime is 78285745682129. The next prime is 78285745682141. The reversal of 78285745682137 is 73128654758287.

It is not a de Polignac number, because 78285745682137 - 2³ = 78285745682129 is a prime.

It is a super-2 number, since 2×78285745682137² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78285745682137.

It is not an unprimeable number, because it can be changed into a prime (78285745682107) 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, 1270989 + ... + 12577237.

It is an arithmetic number, because the mean of its divisors is an integer number (2984850000000).

Almost surely, 2^{78285745682137} is an apocalyptic number.

It is an amenable number.

78285745682137 is a deficient number, since it is larger than the sum of its proper divisors (17229454317863).

78285745682137 is a wasteful number, since it uses less digits than its factorization.

78285745682137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11307013.

The product of its digits is 1264435200, while the sum is 73.

The spelling of 78285745682137 in words is "seventy-eight trillion, two hundred eighty-five billion, seven hundred forty-five million, six hundred eighty-two thousand, one hundred thirty-seven".