2157215221595 has 16 divisors (see below), whose sum is σ = 3132494036928. Its totient is φ = 1392219571200.

The previous prime is 2157215221573. The next prime is 2157215221661. The reversal of 2157215221595 is 5951225127512.

It is not a de Polignac number, because 2157215221595 - 2¹⁶ = 2157215156059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1812785306 + ... + 1812786495.

It is an arithmetic number, because the mean of its divisors is an integer number (195780877308).

Almost surely, 2^{2157215221595} is an apocalyptic number.

2157215221595 is a deficient number, since it is larger than the sum of its proper divisors (975278815333).

2157215221595 is a wasteful number, since it uses less digits than its factorization.

2157215221595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625571830.

The product of its digits is 630000, while the sum is 47.

The spelling of 2157215221595 in words is "two trillion, one hundred fifty-seven billion, two hundred fifteen million, two hundred twenty-one thousand, five hundred ninety-five".