61925562438 has 64 divisors (see below), whose sum is σ = 129738274560. Its totient is φ = 19680216192.

The previous prime is 61925562383. The next prime is 61925562443. The reversal of 61925562438 is 83426552916.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4445881 + ... + 4459787.

It is an arithmetic number, because the mean of its divisors is an integer number (2027160540).

Almost surely, 2^61925562438 is an apocalyptic number.

61925562438 is an abundant number, since it is smaller than the sum of its proper divisors (67812712122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61925562438 is a wasteful number, since it uses less digits than its factorization.

61925562438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14261.

The product of its digits is 3110400, while the sum is 51.

The spelling of 61925562438 in words is "sixty-one billion, nine hundred twenty-five million, five hundred sixty-two thousand, four hundred thirty-eight".