40431515541 has 4 divisors (see below), whose sum is σ = 53908687392. Its totient is φ = 26954343692.

The previous prime is 40431515491. The next prime is 40431515543. The reversal of 40431515541 is 14551513404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40431515541 - 2⁶ = 40431515477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431515543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6738585921 + ... + 6738585926.

It is an arithmetic number, because the mean of its divisors is an integer number (13477171848).

Almost surely, 2^40431515541 is an apocalyptic number.

It is an amenable number.

40431515541 is a deficient number, since it is larger than the sum of its proper divisors (13477171851).

40431515541 is a wasteful number, since it uses less digits than its factorization.

40431515541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13477171850.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 40431515541 in words is "forty billion, four hundred thirty-one million, five hundred fifteen thousand, five hundred forty-one".