40040051924 has 12 divisors (see below), whose sum is σ = 74191861044. Its totient is φ = 18842377344.

The previous prime is 40040051911. The next prime is 40040051927. The reversal of 40040051924 is 42915004004.

It can be written as a sum of positive squares in 2 ways, for example, as 35144251024 + 4895800900 = 187468^2 + 69970^2 .

It is a super-2 number, since 2×40040051924² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040051927) 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, 294412079 + ... + 294412214.

It is an arithmetic number, because the mean of its divisors is an integer number (6182655087).

Almost surely, 2^40040051924 is an apocalyptic number.

It is an amenable number.

40040051924 is a deficient number, since it is larger than the sum of its proper divisors (34151809120).

40040051924 is a wasteful number, since it uses less digits than its factorization.

40040051924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588824314 (or 588824312 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 40040051924 its reverse (42915004004), we get a palindrome (82955055928).

The spelling of 40040051924 in words is "forty billion, forty million, fifty-one thousand, nine hundred twenty-four".