20315277117 has 32 divisors (see below), whose sum is σ = 31950581760. Its totient is φ = 12713448960.

The previous prime is 20315277107. The next prime is 20315277127. The reversal of 20315277117 is 71177251302.

It is a happy number.

20315277117 is a `hidden beast` number, since 20 + 31 + 527 + 71 + 17 = 666.

It is an interprime number because it is at equal distance from previous prime (20315277107) and next prime (20315277127).

It is not a de Polignac number, because 20315277117 - 2²⁴ = 20298499901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315277107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118017 + ... + 233577.

It is an arithmetic number, because the mean of its divisors is an integer number (998455680).

Almost surely, 2^20315277117 is an apocalyptic number.

20315277117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20315277117 is a deficient number, since it is larger than the sum of its proper divisors (11635304643).

20315277117 is a wasteful number, since it uses less digits than its factorization.

20315277117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115970 (or 115964 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The spelling of 20315277117 in words is "twenty billion, three hundred fifteen million, two hundred seventy-seven thousand, one hundred seventeen".