61010015507 has 4 divisors (see below), whose sum is σ = 69725732016. Its totient is φ = 52294299000.

The previous prime is 61010015489. The next prime is 61010015509. The reversal of 61010015507 is 70551001016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61010015507 - 2²⁶ = 60942906643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61010015509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4357858244 + ... + 4357858257.

It is an arithmetic number, because the mean of its divisors is an integer number (17431433004).

Almost surely, 2^61010015507 is an apocalyptic number.

61010015507 is a deficient number, since it is larger than the sum of its proper divisors (8715716509).

61010015507 is an equidigital number, since it uses as much as digits as its factorization.

61010015507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8715716508.

The product of its (nonzero) digits is 1050, while the sum is 26.

The spelling of 61010015507 in words is "sixty-one billion, ten million, fifteen thousand, five hundred seven".