40131307664477 has 4 divisors (see below), whose sum is σ = 40132476447036. Its totient is φ = 40130138881920.

The previous prime is 40131307664447. The next prime is 40131307664579. The reversal of 40131307664477 is 77446670313104.

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 10530972561316 + 29600335103161 = 3245146^2 + 5440619^2 .

It is a cyclic number.

It is not a de Polignac number, because 40131307664477 - 2⁸ = 40131307664221 is a prime.

It is a super-2 number, since 2×40131307664477² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131307664447) 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, 584339774 + ... + 584408447.

It is an arithmetic number, because the mean of its divisors is an integer number (10033119111759).

Almost surely, 2^{40131307664477} is an apocalyptic number.

It is an amenable number.

40131307664477 is a deficient number, since it is larger than the sum of its proper divisors (1168782559).

40131307664477 is a wasteful number, since it uses less digits than its factorization.

40131307664477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168782558.

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 40131307664477 in words is "forty trillion, one hundred thirty-one billion, three hundred seven million, six hundred sixty-four thousand, four hundred seventy-seven".