61613251475027 has 4 divisors (see below), whose sum is σ = 70415144542896. Its totient is φ = 52811358407160.

The previous prime is 61613251474997. The next prime is 61613251475029. The reversal of 61613251475027 is 72057415231616.

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 61613251475027 - 2¹⁶ = 61613251409491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61613251475029) 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, 4400946533924 + ... + 4400946533937.

It is an arithmetic number, because the mean of its divisors is an integer number (17603786135724).

Almost surely, 2^{61613251475027} is an apocalyptic number.

61613251475027 is a deficient number, since it is larger than the sum of its proper divisors (8801893067869).

61613251475027 is an equidigital number, since it uses as much as digits as its factorization.

61613251475027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8801893067868.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 61613251475027 in words is "sixty-one trillion, six hundred thirteen billion, two hundred fifty-one million, four hundred seventy-five thousand, twenty-seven".