40020755133640 has 32 divisors (see below), whose sum is σ = 90047356155000. Its totient is φ = 16008185234944.

The previous prime is 40020755133599. The next prime is 40020755133731. The reversal of 40020755133640 is 4633155702004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39826272369636 + 194482764004 = 6310806^2 + 441002^2 .

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 = 40020755133593 and 40020755133602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007636 + ... + 9169084.

Almost surely, 2^{40020755133640} is an apocalyptic number.

40020755133640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40020755133640 is an abundant number, since it is smaller than the sum of its proper divisors (50026601021360).

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

40020755133640 is a wasteful number, since it uses less digits than its factorization.

40020755133640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7301169 (or 7301165 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 40020755133640 in words is "forty trillion, twenty billion, seven hundred fifty-five million, one hundred thirty-three thousand, six hundred forty".