215151042020000 has 60 divisors (see below), whose sum is σ = 529303836074706. Its totient is φ = 86060416800000.

The previous prime is 215151042019999. The next prime is 215151042020011. The reversal of 215151042020000 is 20240151512.

It can be written as a sum of positive squares in 5 ways, for example, as 6833895245584 + 208317146774416 = 2614172^2 + 14433196^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5378756051 + ... + 5378796050.

Almost surely, 2^{215151042020000} is an apocalyptic number.

215151042020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215151042020000 is an abundant number, since it is smaller than the sum of its proper divisors (314152794054706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215151042020000 is an equidigital number, since it uses as much as digits as its factorization.

215151042020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10757552131 (or 10757552108 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 215151042020000 its reverse (20240151512), we get a palindrome (215171282171512).

The spelling of 215151042020000 in words is "two hundred fifteen trillion, one hundred fifty-one billion, forty-two million, twenty thousand".