61244492565 has 16 divisors (see below), whose sum is σ = 98008664256. Its totient is φ = 32657904000.

The previous prime is 61244492497. The next prime is 61244492579. The reversal of 61244492565 is 56529444216.

It is not a de Polignac number, because 61244492565 - 2²⁴ = 61227715349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276496 + ... + 446025.

It is an arithmetic number, because the mean of its divisors is an integer number (6125541516).

Almost surely, 2^61244492565 is an apocalyptic number.

It is an amenable number.

61244492565 is a deficient number, since it is larger than the sum of its proper divisors (36764171691).

61244492565 is a wasteful number, since it uses less digits than its factorization.

61244492565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728180.

The product of its digits is 2073600, while the sum is 48.

The spelling of 61244492565 in words is "sixty-one billion, two hundred forty-four million, four hundred ninety-two thousand, five hundred sixty-five".