61157101079 has 4 divisors (see below), whose sum is σ = 61638653184. Its totient is φ = 60675548976.

The previous prime is 61157101073. The next prime is 61157101097. The reversal of 61157101079 is 97010175116.

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 61157101079 - 2⁴ = 61157101063 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 (61157101073) 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, 240775862 + ... + 240776115.

It is an arithmetic number, because the mean of its divisors is an integer number (15409663296).

Almost surely, 2^61157101079 is an apocalyptic number.

61157101079 is a deficient number, since it is larger than the sum of its proper divisors (481552105).

61157101079 is a wasteful number, since it uses less digits than its factorization.

61157101079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481552104.

The product of its (nonzero) digits is 13230, while the sum is 38.

The spelling of 61157101079 in words is "sixty-one billion, one hundred fifty-seven million, one hundred one thousand, seventy-nine".