40122464520561 has 4 divisors (see below), whose sum is σ = 53496619360752. Its totient is φ = 26748309680372.

The previous prime is 40122464520553. The next prime is 40122464520623. The reversal of 40122464520561 is 16502546422104.

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 40122464520561 - 2³ = 40122464520553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40122464520511) 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, 6687077420091 + ... + 6687077420096.

It is an arithmetic number, because the mean of its divisors is an integer number (13374154840188).

Almost surely, 2^{40122464520561} is an apocalyptic number.

It is an amenable number.

40122464520561 is a deficient number, since it is larger than the sum of its proper divisors (13374154840191).

40122464520561 is a wasteful number, since it uses less digits than its factorization.

40122464520561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13374154840190.

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 40122464520561 in words is "forty trillion, one hundred twenty-two billion, four hundred sixty-four million, five hundred twenty thousand, five hundred sixty-one".