40131743864 has 8 divisors (see below), whose sum is σ = 75247019760. Its totient is φ = 20065871928.

The previous prime is 40131743857. The next prime is 40131743903. The reversal of 40131743864 is 46834713104.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×40131743864² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2508233984 + ... + 2508233999.

It is an arithmetic number, because the mean of its divisors is an integer number (9405877470).

Almost surely, 2^40131743864 is an apocalyptic number.

It is an amenable number.

40131743864 is a deficient number, since it is larger than the sum of its proper divisors (35115275896).

40131743864 is a wasteful number, since it uses less digits than its factorization.

40131743864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016467989 (or 5016467985 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 40131743864 in words is "forty billion, one hundred thirty-one million, seven hundred forty-three thousand, eight hundred sixty-four".