40515621474 has 16 divisors (see below), whose sum is σ = 81567875520. Its totient is φ = 13415768400.

The previous prime is 40515621473. The next prime is 40515621481. The reversal of 40515621474 is 47412651504.

It is not an unprimeable number, because it can be changed into a prime (40515621473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22358709 + ... + 22360520.

It is an arithmetic number, because the mean of its divisors is an integer number (5097992220).

Almost surely, 2^40515621474 is an apocalyptic number.

40515621474 is an abundant number, since it is smaller than the sum of its proper divisors (41052254046).

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

40515621474 is a wasteful number, since it uses less digits than its factorization.

40515621474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44719385.

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 40515621474 in words is "forty billion, five hundred fifteen million, six hundred twenty-one thousand, four hundred seventy-four".