461956263569 has 4 divisors (see below), whose sum is σ = 489130161444. Its totient is φ = 434782365696.

The previous prime is 461956263563. The next prime is 461956263619. The reversal of 461956263569 is 965362659164.

It is a happy number.

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 411665958544 + 50290305025 = 641612^2 + 224255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461956263569 is a prime.

It is a super-2 number, since 2×461956263569² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461956263563) 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, 13586948912 + ... + 13586948945.

It is an arithmetic number, because the mean of its divisors is an integer number (122282540361).

Almost surely, 2^461956263569 is an apocalyptic number.

It is an amenable number.

461956263569 is a deficient number, since it is larger than the sum of its proper divisors (27173897875).

461956263569 is a wasteful number, since it uses less digits than its factorization.

461956263569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27173897874.

The product of its digits is 62985600, while the sum is 62.

The spelling of 461956263569 in words is "four hundred sixty-one billion, nine hundred fifty-six million, two hundred sixty-three thousand, five hundred sixty-nine".