661160052007 has 32 divisors (see below), whose sum is σ = 862327025280. Its totient is φ = 492758138880.

The previous prime is 661160052001. The next prime is 661160052011. The reversal of 661160052007 is 700250061166.

It is a happy number.

661160052007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 661160052007 - 2³⁵ = 626800313639 is a prime.

It is a super-2 number, since 2×661160052007² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661160052001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2947098 + ... + 3163495.

It is an arithmetic number, because the mean of its divisors is an integer number (26947719540).

Almost surely, 2^661160052007 is an apocalyptic number.

661160052007 is a deficient number, since it is larger than the sum of its proper divisors (201166973273).

661160052007 is a wasteful number, since it uses less digits than its factorization.

661160052007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110683.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 661160052007 in words is "six hundred sixty-one billion, one hundred sixty million, fifty-two thousand, seven".