1290696452957 has 4 divisors (see below), whose sum is σ = 1292031196896. Its totient is φ = 1289361709020.

The previous prime is 1290696452887. The next prime is 1290696452987. The reversal of 1290696452957 is 7592546960921.

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 a cyclic number.

It is not a de Polignac number, because 1290696452957 - 2²⁰ = 1290695404381 is a prime.

It is a super-3 number, since 3×1290696452957³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1290696452893 and 1290696452902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290696452987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667370519 + ... + 667372452.

It is an arithmetic number, because the mean of its divisors is an integer number (323007799224).

Almost surely, 2^{1290696452957} is an apocalyptic number.

It is an amenable number.

1290696452957 is a deficient number, since it is larger than the sum of its proper divisors (1334743939).

1290696452957 is an equidigital number, since it uses as much as digits as its factorization.

1290696452957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334743938.

The product of its (nonzero) digits is 73483200, while the sum is 65.

The spelling of 1290696452957 in words is "one trillion, two hundred ninety billion, six hundred ninety-six million, four hundred fifty-two thousand, nine hundred fifty-seven".