6615434451231 has 6 divisors (see below), whose sum is σ = 9555627540680. Its totient is φ = 4410289634148.

The previous prime is 6615434451193. The next prime is 6615434451271. The reversal of 6615434451231 is 1321544345166.

6615434451231 is a `hidden beast` number, since 6 + 61 + 5 + 4 + 3 + 44 + 512 + 31 = 666.

It is not a de Polignac number, because 6615434451231 - 2²¹ = 6615432354079 is a prime.

It is a super-2 number, since 2×6615434451231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6615434451271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367524136171 + ... + 367524136188.

Almost surely, 2^{6615434451231} is an apocalyptic number.

6615434451231 is a deficient number, since it is larger than the sum of its proper divisors (2940193089449).

6615434451231 is a wasteful number, since it uses less digits than its factorization.

6615434451231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735048272365 (or 735048272362 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

Adding to 6615434451231 its reverse (1321544345166), we get a palindrome (7936978796397).

The spelling of 6615434451231 in words is "six trillion, six hundred fifteen billion, four hundred thirty-four million, four hundred fifty-one thousand, two hundred thirty-one".