40644648222915 has 64 divisors (see below), whose sum is σ = 71059831165440. Its totient is φ = 19674172861440.

The previous prime is 40644648222847. The next prime is 40644648222977. The reversal of 40644648222915 is 51922284644604.

It is a happy number.

It is not a de Polignac number, because 40644648222915 - 2¹² = 40644648218819 is a prime.

It is a super-3 number, since 3×40644648222915³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293247751 + ... + 293386319.

It is an arithmetic number, because the mean of its divisors is an integer number (1110309861960).

Almost surely, 2^{40644648222915} is an apocalyptic number.

40644648222915 is a deficient number, since it is larger than the sum of its proper divisors (30415182942525).

40644648222915 is a wasteful number, since it uses less digits than its factorization.

40644648222915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141492.

The product of its (nonzero) digits is 26542080, while the sum is 57.

The spelling of 40644648222915 in words is "forty trillion, six hundred forty-four billion, six hundred forty-eight million, two hundred twenty-two thousand, nine hundred fifteen".