129374556746 has 32 divisors (see below), whose sum is σ = 201941287680. Its totient is φ = 62117362944.

The previous prime is 129374556739. The next prime is 129374556757. The reversal of 129374556746 is 647655473921.

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, 1932095 + ... + 1997933.

It is an arithmetic number, because the mean of its divisors is an integer number (6310665240).

Almost surely, 2^129374556746 is an apocalyptic number.

129374556746 is a deficient number, since it is larger than the sum of its proper divisors (72566730934).

129374556746 is a wasteful number, since it uses less digits than its factorization.

129374556746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66270.

The product of its digits is 38102400, while the sum is 59.

The spelling of 129374556746 in words is "one hundred twenty-nine billion, three hundred seventy-four million, five hundred fifty-six thousand, seven hundred forty-six".