61925418791 has 8 divisors (see below), whose sum is σ = 62345712000. Its totient is φ = 61506217080.

The previous prime is 61925418769. The next prime is 61925418823. The reversal of 61925418791 is 19781452916.

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

It is a cyclic number.

It is not a de Polignac number, because 61925418791 - 2¹⁰ = 61925417767 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 (61925418701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158861 + ... + 386118.

It is an arithmetic number, because the mean of its divisors is an integer number (7793214000).

Almost surely, 2^61925418791 is an apocalyptic number.

61925418791 is a deficient number, since it is larger than the sum of its proper divisors (420293209).

61925418791 is a wasteful number, since it uses less digits than its factorization.

61925418791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545749.

The product of its digits is 1088640, while the sum is 53.

The spelling of 61925418791 in words is "sixty-one billion, nine hundred twenty-five million, four hundred eighteen thousand, seven hundred ninety-one".