55665200031 has 16 divisors (see below), whose sum is σ = 84889626624. Its totient is φ = 31783761504.

The previous prime is 55665199951. The next prime is 55665200033. The reversal of 55665200031 is 13000256655.

It is not a de Polignac number, because 55665200031 - 2⁹ = 55665199519 is a prime.

It is a super-2 number, since 2×55665200031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55665199965 and 55665200001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665200033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011055 + ... + 1064688.

It is an arithmetic number, because the mean of its divisors is an integer number (5305601664).

Almost surely, 2^55665200031 is an apocalyptic number.

55665200031 is a deficient number, since it is larger than the sum of its proper divisors (29224426593).

55665200031 is a wasteful number, since it uses less digits than its factorization.

55665200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077030.

The product of its (nonzero) digits is 27000, while the sum is 33.

Adding to 55665200031 its reverse (13000256655), we get a palindrome (68665456686).

The spelling of 55665200031 in words is "fifty-five billion, six hundred sixty-five million, two hundred thousand, thirty-one".