129077914585 has 16 divisors (see below), whose sum is σ = 164293174800. Its totient is φ = 97017235456.

The previous prime is 129077914513. The next prime is 129077914591. The reversal of 129077914585 is 585419770921.

It can be written as a sum of positive squares in 8 ways, for example, as 1711725129 + 127366189456 = 41373^2 + 356884^2 .

It is a cyclic number.

It is not a de Polignac number, because 129077914585 - 2³³ = 120487979993 is a prime.

It is a super-2 number, since 2×129077914585² (a number of 23 digits) contains 22 as substring.

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, 1286050 + ... + 1382779.

It is an arithmetic number, because the mean of its divisors is an integer number (10268323425).

Almost surely, 2^129077914585 is an apocalyptic number.

It is an amenable number.

129077914585 is a deficient number, since it is larger than the sum of its proper divisors (35215260215).

129077914585 is a wasteful number, since it uses less digits than its factorization.

129077914585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669420.

The product of its (nonzero) digits is 6350400, while the sum is 58.

The spelling of 129077914585 in words is "one hundred twenty-nine billion, seventy-seven million, nine hundred fourteen thousand, five hundred eighty-five".