40045350657440 has 24 divisors (see below), whose sum is σ = 94607140928580. Its totient is φ = 16018140262912.

The previous prime is 40045350657437. The next prime is 40045350657467. The reversal of 40045350657440 is 4475605354004.

It can be written as a sum of positive squares in 2 ways, for example, as 39303320023696 + 742030633744 = 6269236^2 + 861412^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125141720645 + ... + 125141720964.

Almost surely, 2^{40045350657440} is an apocalyptic number.

40045350657440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40045350657440 is an abundant number, since it is smaller than the sum of its proper divisors (54561790271140).

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

40045350657440 is a wasteful number, since it uses less digits than its factorization.

40045350657440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250283441624 (or 250283441616 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 47.

The spelling of 40045350657440 in words is "forty trillion, forty-five billion, three hundred fifty million, six hundred fifty-seven thousand, four hundred forty".