40020565764508 has 72 divisors (see below), whose sum is σ = 86494086412272. Its totient is φ = 16099470567936.

The previous prime is 40020565764497. The next prime is 40020565764521. The reversal of 40020565764508 is 80546756502004.

It is a super-2 number, since 2×40020565764508² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14857666 + ... + 17343337.

It is an arithmetic number, because the mean of its divisors is an integer number (1201306755726).

Almost surely, 2^{40020565764508} is an apocalyptic number.

It is an amenable number.

40020565764508 is an abundant number, since it is smaller than the sum of its proper divisors (46473520647764).

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

40020565764508 is a wasteful number, since it uses less digits than its factorization.

40020565764508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32201411 (or 32201402 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 52.

The spelling of 40020565764508 in words is "forty trillion, twenty billion, five hundred sixty-five million, seven hundred sixty-four thousand, five hundred eight".