40097825621 has 8 divisors (see below), whose sum is σ = 46082099520. Its totient is φ = 34177555008.

The previous prime is 40097825609. The next prime is 40097825623. The reversal of 40097825621 is 12652879004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40097825621 - 2³⁴ = 22917956437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40097825623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15999476 + ... + 16001981.

It is an arithmetic number, because the mean of its divisors is an integer number (5760262440).

Almost surely, 2^40097825621 is an apocalyptic number.

It is an amenable number.

40097825621 is a deficient number, since it is larger than the sum of its proper divisors (5984273899).

40097825621 is a wasteful number, since it uses less digits than its factorization.

40097825621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32001643.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 40097825621 in words is "forty billion, ninety-seven million, eight hundred twenty-five thousand, six hundred twenty-one".