61585365983 has 4 divisors (see below), whose sum is σ = 61812618528. Its totient is φ = 61358113440.

The previous prime is 61585365937. The next prime is 61585365997. The reversal of 61585365983 is 38956358516.

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 61585365983 - 2¹⁴ = 61585349599 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 (61585365923) 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, 113625866 + ... + 113626407.

It is an arithmetic number, because the mean of its divisors is an integer number (15453154632).

Almost surely, 2^61585365983 is an apocalyptic number.

61585365983 is a deficient number, since it is larger than the sum of its proper divisors (227252545).

61585365983 is a wasteful number, since it uses less digits than its factorization.

61585365983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227252544.

The product of its digits is 23328000, while the sum is 59.

The spelling of 61585365983 in words is "sixty-one billion, five hundred eighty-five million, three hundred sixty-five thousand, nine hundred eighty-three".