129465421635 has 16 divisors (see below), whose sum is σ = 225976008960. Its totient is φ = 62771113440.

The previous prime is 129465421627. The next prime is 129465421643. The reversal of 129465421635 is 536124564921.

It is an interprime number because it is at equal distance from previous prime (129465421627) and next prime (129465421643).

It is not a de Polignac number, because 129465421635 - 2³ = 129465421627 is a prime.

It is a super-2 number, since 2×129465421635² (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, 392319295 + ... + 392319624.

It is an arithmetic number, because the mean of its divisors is an integer number (14123500560).

Almost surely, 2^129465421635 is an apocalyptic number.

129465421635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129465421635 is a deficient number, since it is larger than the sum of its proper divisors (96510587325).

129465421635 is a wasteful number, since it uses less digits than its factorization.

129465421635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784638938.

The product of its digits is 1555200, while the sum is 48.

The spelling of 129465421635 in words is "one hundred twenty-nine billion, four hundred sixty-five million, four hundred twenty-one thousand, six hundred thirty-five".