40512251201521 has 12 divisors (see below), whose sum is σ = 44573694958800. Its totient is φ = 36793176552440.

The previous prime is 40512251201507. The next prime is 40512251201533. The reversal of 40512251201521 is 12510215221504.

It is not a de Polignac number, because 40512251201521 - 2¹³ = 40512251193329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40512251201551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164161291 + ... + 164407888.

It is an arithmetic number, because the mean of its divisors is an integer number (3714474579900).

Almost surely, 2^{40512251201521} is an apocalyptic number.

It is an amenable number.

40512251201521 is a deficient number, since it is larger than the sum of its proper divisors (4061443757279).

40512251201521 is a wasteful number, since it uses less digits than its factorization.

40512251201521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328570220 (or 328570209 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 31.

The spelling of 40512251201521 in words is "forty trillion, five hundred twelve billion, two hundred fifty-one million, two hundred one thousand, five hundred twenty-one".