7537943664 has 30 divisors (see below), whose sum is σ = 21095773296. Its totient is φ = 2512647840.

The previous prime is 7537943563. The next prime is 7537943681. The reversal of 7537943664 is 4663497357.

It is a happy number.

7537943664 is a `hidden beast` number, since 7 + 537 + 9 + 43 + 6 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7537943664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26173272 + ... + 26173559.

Almost surely, 2^7537943664 is an apocalyptic number.

It is an amenable number.

7537943664 is an abundant number, since it is smaller than the sum of its proper divisors (13557829632).

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

7537943664 is a wasteful number, since it uses less digits than its factorization.

7537943664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52346845 (or 52346836 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 54.

The square root of 7537943664 is about 86821.3318488031. The cubic root of 7537943664 is about 1960.7292566065.

The spelling of 7537943664 in words is "seven billion, five hundred thirty-seven million, nine hundred forty-three thousand, six hundred sixty-four".