40385454615 has 96 divisors (see below), whose sum is σ = 77123592000. Its totient is φ = 19387330560.

The previous prime is 40385454587. The next prime is 40385454701. The reversal of 40385454615 is 51645458304.

40385454615 is a `hidden beast` number, since 40 + 3 + 8 + 54 + 546 + 15 = 666.

It is not a de Polignac number, because 40385454615 - 2⁵ = 40385454583 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27121791 + ... + 27123279.

It is an arithmetic number, because the mean of its divisors is an integer number (803370750).

Almost surely, 2^40385454615 is an apocalyptic number.

40385454615 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40385454615 is a deficient number, since it is larger than the sum of its proper divisors (36738137385).

40385454615 is a wasteful number, since it uses less digits than its factorization.

40385454615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017 (or 2014 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 40385454615 in words is "forty billion, three hundred eighty-five million, four hundred fifty-four thousand, six hundred fifteen".