129400064554 has 8 divisors (see below), whose sum is σ = 199346045508. Its totient is φ = 62951382720.

The previous prime is 129400064533. The next prime is 129400064569. The reversal of 129400064554 is 455460004921.

It can be written as a sum of positive squares in 2 ways, for example, as 112764998025 + 16635066529 = 335805^2 + 128977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874324687 + ... + 874324834.

Almost surely, 2^129400064554 is an apocalyptic number.

129400064554 is a deficient number, since it is larger than the sum of its proper divisors (69945980954).

129400064554 is a wasteful number, since it uses less digits than its factorization.

129400064554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748649560.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 129400064554 in words is "one hundred twenty-nine billion, four hundred million, sixty-four thousand, five hundred fifty-four".