61012300157 has 4 divisors (see below), whose sum is σ = 61572046140. Its totient is φ = 60452554176.

The previous prime is 61012300061. The next prime is 61012300199. The reversal of 61012300157 is 75100321016.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47693755321 + 13318544836 = 218389^2 + 115406^2 .

It is a cyclic number.

It is not a de Polignac number, because 61012300157 - 2²⁴ = 60995522941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61012300957) 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, 279872828 + ... + 279873045.

It is an arithmetic number, because the mean of its divisors is an integer number (15393011535).

Almost surely, 2^61012300157 is an apocalyptic number.

It is an amenable number.

61012300157 is a deficient number, since it is larger than the sum of its proper divisors (559745983).

61012300157 is a wasteful number, since it uses less digits than its factorization.

61012300157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559745982.

The product of its (nonzero) digits is 1260, while the sum is 26.

The spelling of 61012300157 in words is "sixty-one billion, twelve million, three hundred thousand, one hundred fifty-seven".