215001271790 has 48 divisors (see below), whose sum is σ = 409997684448. Its totient is φ = 81164020032.

The previous prime is 215001271789. The next prime is 215001271843. The reversal of 215001271790 is 97172100512.

215001271790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 215001271790.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 836204 + ... + 1062656.

It is an arithmetic number, because the mean of its divisors is an integer number (8541618426).

Almost surely, 2^215001271790 is an apocalyptic number.

215001271790 is a deficient number, since it is larger than the sum of its proper divisors (194996412658).

215001271790 is a wasteful number, since it uses less digits than its factorization.

215001271790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226761 (or 226742 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 35.

The spelling of 215001271790 in words is "two hundred fifteen billion, one million, two hundred seventy-one thousand, seven hundred ninety".