7457516866 has 16 divisors (see below), whose sum is σ = 11576426040. Its totient is φ = 3598806400.

The previous prime is 7457516861. The next prime is 7457516867. The reversal of 7457516866 is 6686157547.

It can be written as a sum of positive squares in 4 ways, for example, as 4607558641 + 2849958225 = 67879^2 + 53385^2 .

It is a super-2 number, since 2×7457516866² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7457516861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137916 + ... + 184216.

Almost surely, 2^7457516866 is an apocalyptic number.

7457516866 is a deficient number, since it is larger than the sum of its proper divisors (4118909174).

7457516866 is a wasteful number, since it uses less digits than its factorization.

7457516866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49109.

The product of its digits is 8467200, while the sum is 55.

The square root of 7457516866 is about 86356.9155655759. The cubic root of 7457516866 is about 1953.7309124503.

The spelling of 7457516866 in words is "seven billion, four hundred fifty-seven million, five hundred sixteen thousand, eight hundred sixty-six".