61430085579 has 16 divisors (see below), whose sum is σ = 82906371072. Its totient is φ = 40453747488.

The previous prime is 61430085557. The next prime is 61430085623. The reversal of 61430085579 is 97558003416.

It is not a de Polignac number, because 61430085579 - 2¹⁷ = 61429954507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61430015579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2056102 + ... + 2085764.

It is an arithmetic number, because the mean of its divisors is an integer number (5181648192).

Almost surely, 2^61430085579 is an apocalyptic number.

61430085579 is a deficient number, since it is larger than the sum of its proper divisors (21476285493).

61430085579 is a wasteful number, since it uses less digits than its factorization.

61430085579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38066.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 61430085579 in words is "sixty-one billion, four hundred thirty million, eighty-five thousand, five hundred seventy-nine".