40951597521 has 16 divisors (see below), whose sum is σ = 56093745600. Its totient is φ = 26555675328.

The previous prime is 40951597493. The next prime is 40951597553. The reversal of 40951597521 is 12579515904.

40951597521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40951597521 - 2³⁰ = 39877855697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40951597591) 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, 355735 + ... + 456563.

It is an arithmetic number, because the mean of its divisors is an integer number (3505859100).

Almost surely, 2^40951597521 is an apocalyptic number.

It is an amenable number.

40951597521 is a deficient number, since it is larger than the sum of its proper divisors (15142148079).

40951597521 is a wasteful number, since it uses less digits than its factorization.

40951597521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104528.

The product of its (nonzero) digits is 567000, while the sum is 48.

It can be divided in two parts, 4095159 and 7521, that added together give a triangular number (4102680 = T₂₈₆₄).

The spelling of 40951597521 in words is "forty billion, nine hundred fifty-one million, five hundred ninety-seven thousand, five hundred twenty-one".