40642201364643 has 20 divisors (see below), whose sum is σ = 61567528836528. Its totient is φ = 26713183991760.

The previous prime is 40642201364629. The next prime is 40642201364683. The reversal of 40642201364643 is 34646310224604.

40642201364643 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 220 + 1 + 364 + 64 + 3 = 666.

It is not a de Polignac number, because 40642201364643 - 2⁹ = 40642201364131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40642201364683) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3533484196 + ... + 3533495697.

Almost surely, 2^{40642201364643} is an apocalyptic number.

40642201364643 is a deficient number, since it is larger than the sum of its proper divisors (20925327471885).

40642201364643 is an equidigital number, since it uses as much as digits as its factorization.

40642201364643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066979976 (or 7066979967 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 45.

The spelling of 40642201364643 in words is "forty trillion, six hundred forty-two billion, two hundred one million, three hundred sixty-four thousand, six hundred forty-three".