5231415365661 has 4 divisors (see below), whose sum is σ = 6975220487552. Its totient is φ = 3487610243772.

The previous prime is 5231415365593. The next prime is 5231415365663. The reversal of 5231415365661 is 1665635141325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5231415365661 - 2¹¹ = 5231415363613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5231415365661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231415365663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871902560941 + ... + 871902560946.

It is an arithmetic number, because the mean of its divisors is an integer number (1743805121888).

Almost surely, 2^{5231415365661} is an apocalyptic number.

It is an amenable number.

5231415365661 is a deficient number, since it is larger than the sum of its proper divisors (1743805121891).

5231415365661 is a wasteful number, since it uses less digits than its factorization.

5231415365661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743805121890.

The product of its digits is 1944000, while the sum is 48.

The spelling of 5231415365661 in words is "five trillion, two hundred thirty-one billion, four hundred fifteen million, three hundred sixty-five thousand, six hundred sixty-one".