39137104561 has 3 divisors (see below), whose sum is σ = 39137302393. Its totient is φ = 39136906730.

The previous prime is 39137104547. The next prime is 39137104577. The reversal of 39137104561 is 16540173193.

The square root of 39137104561 is 197831.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 39137104561 - 2⁵ = 39137104529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39137104511) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 98916 + ... + 296746.

Almost surely, 2^39137104561 is an apocalyptic number.

39137104561 is the 197831-st square number.

39137104561 is the 98916-th centered octagonal number.

It is an amenable number.

39137104561 is a deficient number, since it is larger than the sum of its proper divisors (197832).

39137104561 is an frugal number, since it uses more digits than its factorization.

39137104561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395662 (or 197831 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 39137104561 in words is "thirty-nine billion, one hundred thirty-seven million, one hundred four thousand, five hundred sixty-one".