69903129664 has 21 divisors (see below), whose sum is σ = 138718220277. Its totient is φ = 34950507264.

The previous prime is 69903129643. The next prime is 69903129679. The reversal of 69903129664 is 46692130996.

The square root of 69903129664 is 264392.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 207129664 + 69696000000 = 14392^2 + 264000^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2098612 + ... + 2131660.

It is an arithmetic number, because the mean of its divisors is an integer number (6605629537).

Almost surely, 2^69903129664 is an apocalyptic number.

69903129664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

69903129664 is the 264392-nd square number.

It is an amenable number.

69903129664 is a deficient number, since it is larger than the sum of its proper divisors (68815090613).

69903129664 is an frugal number, since it uses more digits than its factorization.

69903129664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66110 (or 33051 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 55.

The spelling of 69903129664 in words is "sixty-nine billion, nine hundred three million, one hundred twenty-nine thousand, six hundred sixty-four".