40455312515 has 8 divisors (see below), whose sum is σ = 48558919920. Its totient is φ = 32355886752.

The previous prime is 40455312509. The next prime is 40455312523. The reversal of 40455312515 is 51521355404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40455312515 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1024085 + ... + 1062854.

It is an arithmetic number, because the mean of its divisors is an integer number (6069864990).

Almost surely, 2^40455312515 is an apocalyptic number.

40455312515 is a deficient number, since it is larger than the sum of its proper divisors (8103607405).

40455312515 is a wasteful number, since it uses less digits than its factorization.

40455312515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090821.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 40455312515 its reverse (51521355404), we get a palindrome (91976667919).

The spelling of 40455312515 in words is "forty billion, four hundred fifty-five million, three hundred twelve thousand, five hundred fifteen".