40551401631 has 8 divisors (see below), whose sum is σ = 58227653680. Its totient is φ = 24954708672.

The previous prime is 40551401629. The next prime is 40551401647. The reversal of 40551401631 is 13610415504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40551401631 - 2¹ = 40551401629 is a prime.

It is a super-2 number, since 2×40551401631² (a number of 22 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 (40551401651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519889726 + ... + 519889803.

It is an arithmetic number, because the mean of its divisors is an integer number (7278456710).

Almost surely, 2^40551401631 is an apocalyptic number.

40551401631 is a deficient number, since it is larger than the sum of its proper divisors (17676252049).

40551401631 is a wasteful number, since it uses less digits than its factorization.

40551401631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039779545.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 40551401631 in words is "forty billion, five hundred fifty-one million, four hundred one thousand, six hundred thirty-one".