7492871664 has 60 divisors (see below), whose sum is σ = 20977001136. Its totient is φ = 2496746496.

The previous prime is 7492871663. The next prime is 7492871677. The reversal of 7492871664 is 4661782947.

7492871664 is a `hidden beast` number, since 7 + 492 + 87 + 16 + 64 = 666.

It is a super-2 number, since 2×7492871664² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7492871664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7492871663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500512 + ... + 515264.

Almost surely, 2^7492871664 is an apocalyptic number.

It is an amenable number.

7492871664 is an abundant number, since it is smaller than the sum of its proper divisors (13484129472).

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

7492871664 is a wasteful number, since it uses less digits than its factorization.

7492871664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18294 (or 18285 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 7492871664 is about 86561.3751277092. The cubic root of 7492871664 is about 1956.8134797443.

The spelling of 7492871664 in words is "seven billion, four hundred ninety-two million, eight hundred seventy-one thousand, six hundred sixty-four".