7642920816 has 60 divisors (see below), whose sum is σ = 21395614968. Its totient is φ = 2546919552.

The previous prime is 7642920793. The next prime is 7642920821. The reversal of 7642920816 is 6180292467.

It is a happy number.

7642920816 is a `hidden beast` number, since 7 + 6 + 429 + 208 + 16 = 666.

It is a super-2 number, since 2×7642920816² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 815131 + ... + 824453.

Almost surely, 2^7642920816 is an apocalyptic number.

It is an amenable number.

7642920816 is an abundant number, since it is smaller than the sum of its proper divisors (13752694152).

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

7642920816 is a wasteful number, since it uses less digits than its factorization.

7642920816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15030 (or 15021 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 7642920816 is about 87423.8000546762. The cubic root of 7642920816 is about 1969.7893576045.

The spelling of 7642920816 in words is "seven billion, six hundred forty-two million, nine hundred twenty thousand, eight hundred sixteen".