167980408517 has 16 divisors (see below), whose sum is σ = 182700659952. Its totient is φ = 153799326720.

The previous prime is 167980408501. The next prime is 167980408543. The reversal of 167980408517 is 715804089761.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 22690601956 + 145289806561 = 150634^2 + 381169^2 .

It is not a de Polignac number, because 167980408517 - 2⁴ = 167980408501 is a prime.

It is a super-2 number, since 2×167980408517² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167980408597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4169723 + ... + 4209815.

It is an arithmetic number, because the mean of its divisors is an integer number (11418791247).

Almost surely, 2^167980408517 is an apocalyptic number.

167980408517 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

167980408517 is a deficient number, since it is larger than the sum of its proper divisors (14720251435).

167980408517 is a wasteful number, since it uses less digits than its factorization.

167980408517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46808.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 167980408517 in words is "one hundred sixty-seven billion, nine hundred eighty million, four hundred eight thousand, five hundred seventeen".