40540977040 has 20 divisors (see below), whose sum is σ = 94257771804. Its totient is φ = 16216390784.

The previous prime is 40540977019. The next prime is 40540977047. The reversal of 40540977040 is 4077904504.

It can be written as a sum of positive squares in 2 ways, for example, as 15727166464 + 24813810576 = 125408^2 + 157524^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 40540976984 and 40540977002.

It is not an unprimeable number, because it can be changed into a prime (40540977047) 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 3 ways as a sum of consecutive naturals, for example, 253381027 + ... + 253381186.

Almost surely, 2^40540977040 is an apocalyptic number.

40540977040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40540977040 is an abundant number, since it is smaller than the sum of its proper divisors (53716794764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40540977040 is a wasteful number, since it uses less digits than its factorization.

40540977040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506762226 (or 506762220 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 40540977040 in words is "forty billion, five hundred forty million, nine hundred seventy-seven thousand, forty".