7645492453961 has 4 divisors (see below), whose sum is σ = 8095227304212. Its totient is φ = 7195757603712.

The previous prime is 7645492453943. The next prime is 7645492453967. The reversal of 7645492453961 is 1693542945467.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6783649447936 + 861843006025 = 2604544^2 + 928355^2 .

It is a cyclic number.

It is not a de Polignac number, because 7645492453961 - 2²² = 7645488259657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7645492453967) 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, 224867425100 + ... + 224867425133.

It is an arithmetic number, because the mean of its divisors is an integer number (2023806826053).

Almost surely, 2^{7645492453961} is an apocalyptic number.

It is an amenable number.

7645492453961 is a deficient number, since it is larger than the sum of its proper divisors (449734850251).

7645492453961 is a wasteful number, since it uses less digits than its factorization.

7645492453961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449734850250.

The product of its digits is 195955200, while the sum is 65.

The spelling of 7645492453961 in words is "seven trillion, six hundred forty-five billion, four hundred ninety-two million, four hundred fifty-three thousand, nine hundred sixty-one".