402440240264015 has 8 divisors (see below), whose sum is σ = 482934560330448. Its totient is φ = 321948010868800.

The previous prime is 402440240263993. The next prime is 402440240264039. The reversal of 402440240264015 is 510462042044204.

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

It is a de Polignac number, because none of the positive numbers 2^k-402440240264015 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402440240264015.

It is a congruent number.

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, 522244286 + ... + 523014315.

It is an arithmetic number, because the mean of its divisors is an integer number (60366820041306).

Almost surely, 2^{402440240264015} is an apocalyptic number.

402440240264015 is a deficient number, since it is larger than the sum of its proper divisors (80494320066433).

402440240264015 is a wasteful number, since it uses less digits than its factorization.

402440240264015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045335609.

The product of its (nonzero) digits is 245760, while the sum is 38.

The spelling of 402440240264015 in words is "four hundred two trillion, four hundred forty billion, two hundred forty million, two hundred sixty-four thousand, fifteen".