61925562439 has 8 divisors (see below), whose sum is σ = 66709932912. Its totient is φ = 57144172800.

The previous prime is 61925562383. The next prime is 61925562443. The reversal of 61925562439 is 93426552916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61925562439 - 2⁹ = 61925561927 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 (61925562539) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 701962 + ... + 785239.

It is an arithmetic number, because the mean of its divisors is an integer number (8338741614).

Almost surely, 2^61925562439 is an apocalyptic number.

61925562439 is a deficient number, since it is larger than the sum of its proper divisors (4784370473).

61925562439 is a wasteful number, since it uses less digits than its factorization.

61925562439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490417.

The product of its digits is 3499200, while the sum is 52.

The spelling of 61925562439 in words is "sixty-one billion, nine hundred twenty-five million, five hundred sixty-two thousand, four hundred thirty-nine".