40451815473 has 4 divisors (see below), whose sum is σ = 53935753968. Its totient is φ = 26967876980.

The previous prime is 40451815447. The next prime is 40451815477. The reversal of 40451815473 is 37451815404.

40451815473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40451815473 - 2⁹ = 40451814961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40451815477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6741969243 + ... + 6741969248.

It is an arithmetic number, because the mean of its divisors is an integer number (13483938492).

Almost surely, 2^40451815473 is an apocalyptic number.

It is an amenable number.

40451815473 is a deficient number, since it is larger than the sum of its proper divisors (13483938495).

40451815473 is a wasteful number, since it uses less digits than its factorization.

40451815473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13483938494.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 40451815473 in words is "forty billion, four hundred fifty-one million, eight hundred fifteen thousand, four hundred seventy-three".