245639164071 has 32 divisors (see below), whose sum is σ = 383725191168. Its totient is φ = 136856244960.

The previous prime is 245639164049. The next prime is 245639164073. The reversal of 245639164071 is 170461936542.

It is not a de Polignac number, because 245639164071 - 2⁵ = 245639164039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245639164071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245639164073) 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, 213565 + ... + 732726.

It is an arithmetic number, because the mean of its divisors is an integer number (11991412224).

Almost surely, 2^245639164071 is an apocalyptic number.

245639164071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

245639164071 is a deficient number, since it is larger than the sum of its proper divisors (138086027097).

245639164071 is a wasteful number, since it uses less digits than its factorization.

245639164071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946611.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 245639164071 in words is "two hundred forty-five billion, six hundred thirty-nine million, one hundred sixty-four thousand, seventy-one".