129000402775 has 12 divisors (see below), whose sum is σ = 159970408312. Its totient is φ = 103193929440.

The previous prime is 129000402763. The next prime is 129000402799. The reversal of 129000402775 is 577204000921.

It is not a de Polignac number, because 129000402775 - 2⁵ = 129000402743 is a prime.

It is a super-2 number, since 2×129000402775² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275032 + ... + 577618.

Almost surely, 2^129000402775 is an apocalyptic number.

129000402775 is a deficient number, since it is larger than the sum of its proper divisors (30970005537).

129000402775 is a wasteful number, since it uses less digits than its factorization.

129000402775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319650 (or 319645 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 129000402775 in words is "one hundred twenty-nine billion, four hundred two thousand, seven hundred seventy-five".