215151555000 has 80 divisors (see below), whose sum is σ = 672133504680. Its totient is φ = 57373744000.

The previous prime is 215151554999. The next prime is 215151555001. The reversal of 215151555000 is 555151512.

It is an interprime number because it is at equal distance from previous prime (215151554999) and next prime (215151555001).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215151555001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7156719 + ... + 7186718.

Almost surely, 2^215151555000 is an apocalyptic number.

215151555000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215151555000 is an abundant number, since it is smaller than the sum of its proper divisors (456981949680).

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

215151555000 is a wasteful number, since it uses less digits than its factorization.

215151555000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14343466 (or 14343447 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 30.

The spelling of 215151555000 in words is "two hundred fifteen billion, one hundred fifty-one million, five hundred fifty-five thousand".