10661033431 has 2 divisors, whose sum is σ = 10661033432. Its totient is φ = 10661033430.

The previous prime is 10661033429. The next prime is 10661033441. The reversal of 10661033431 is 13433016601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10661033431 - 2¹ = 10661033429 is a prime.

It is a super-2 number, since 2×10661033431² (a number of 21 digits) contains 22 as substring.

Together with 10661033429, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10661033431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10661033401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330516715 + 5330516716.

It is an arithmetic number, because the mean of its divisors is an integer number (5330516716).

Almost surely, 2^10661033431 is an apocalyptic number.

10661033431 is a deficient number, since it is larger than the sum of its proper divisors (1).

10661033431 is an equidigital number, since it uses as much as digits as its factorization.

10661033431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

It can be divided in two parts, 106610 and 33431, that added together give a palindrome (140041).

The spelling of 10661033431 in words is "ten billion, six hundred sixty-one million, thirty-three thousand, four hundred thirty-one".