40138689590 has 32 divisors (see below), whose sum is σ = 76167548640. Its totient is φ = 15187392000.

The previous prime is 40138689583. The next prime is 40138689593. The reversal of 40138689590 is 9598683104.

40138689590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40138689590² (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 (40138689593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34211 + ... + 285390.

It is an arithmetic number, because the mean of its divisors is an integer number (2380235895).

Almost surely, 2^40138689590 is an apocalyptic number.

40138689590 is a deficient number, since it is larger than the sum of its proper divisors (36028859050).

40138689590 is a wasteful number, since it uses less digits than its factorization.

40138689590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320288.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 40138689590 in words is "forty billion, one hundred thirty-eight million, six hundred eighty-nine thousand, five hundred ninety".