215153126544 has 40 divisors (see below), whose sum is σ = 556124193472. Its totient is φ = 71677457280.

The previous prime is 215153126477. The next prime is 215153126563. The reversal of 215153126544 is 445621351512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171387 + ... + 1342554.

Almost surely, 2^215153126544 is an apocalyptic number.

215153126544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

215153126544 is an abundant number, since it is smaller than the sum of its proper divisors (340971066928).

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

215153126544 is a wasteful number, since it uses less digits than its factorization.

215153126544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515735 (or 2515729 counting only the distinct ones).

The product of its digits is 144000, while the sum is 39.

The spelling of 215153126544 in words is "two hundred fifteen billion, one hundred fifty-three million, one hundred twenty-six thousand, five hundred forty-four".