129930401693 has 4 divisors (see below), whose sum is σ = 129931467228. Its totient is φ = 129929336160.

The previous prime is 129930401687. The next prime is 129930401729. The reversal of 129930401693 is 396104039921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 116825189209 + 13105212484 = 341797^2 + 114478^2 .

It is a cyclic number.

It is not a de Polignac number, because 129930401693 - 2⁸ = 129930401437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129930401603) 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 3 ways as a sum of consecutive naturals, for example, 322088 + ... + 602993.

It is an arithmetic number, because the mean of its divisors is an integer number (32482866807).

Almost surely, 2^129930401693 is an apocalyptic number.

It is an amenable number.

129930401693 is a deficient number, since it is larger than the sum of its proper divisors (1065535).

129930401693 is an equidigital number, since it uses as much as digits as its factorization.

129930401693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065534.

The product of its (nonzero) digits is 314928, while the sum is 47.

The spelling of 129930401693 in words is "one hundred twenty-nine billion, nine hundred thirty million, four hundred one thousand, six hundred ninety-three".