40451023215 has 16 divisors (see below), whose sum is σ = 71912930400. Its totient is φ = 21573878976.

The previous prime is 40451023213. The next prime is 40451023271. The reversal of 40451023215 is 51232015404.

40451023215 is a `hidden beast` number, since 404 + 5 + 10 + 232 + 15 = 666.

40451023215 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 40451023215 - 2¹ = 40451023213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40451023213) 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, 149818470 + ... + 149818739.

It is an arithmetic number, because the mean of its divisors is an integer number (4494558150).

Almost surely, 2^40451023215 is an apocalyptic number.

40451023215 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40451023215 is a deficient number, since it is larger than the sum of its proper divisors (31461907185).

40451023215 is a wasteful number, since it uses less digits than its factorization.

40451023215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299637223 (or 299637217 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 40451023215 its reverse (51232015404), we get a palindrome (91683038619).

The spelling of 40451023215 in words is "forty billion, four hundred fifty-one million, twenty-three thousand, two hundred fifteen".