749325652128 has 36 divisors (see below), whose sum is σ = 2130894824058. Its totient is φ = 249775217280.

The previous prime is 749325652109. The next prime is 749325652177. The reversal of 749325652128 is 821256523947.

749325652128 is a `hidden beast` number, since 7 + 4 + 9 + 32 + 565 + 21 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 440380886544 + 308944765584 = 663612^2 + 555828^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×749325652128² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1300912303 + ... + 1300912878.

Almost surely, 2^749325652128 is an apocalyptic number.

It is an amenable number.

749325652128 is an abundant number, since it is smaller than the sum of its proper divisors (1381569171930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749325652128 is a wasteful number, since it uses less digits than its factorization.

749325652128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601825197 (or 2601825186 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 749325652128 in words is "seven hundred forty-nine billion, three hundred twenty-five million, six hundred fifty-two thousand, one hundred twenty-eight".