215351153512 has 32 divisors (see below), whose sum is σ = 440521941600. Its totient is φ = 97880011200.

The previous prime is 215351153477. The next prime is 215351153527.

It is a happy number.

215351153512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×215351153512² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300039 + ... + 1456297.

It is an arithmetic number, because the mean of its divisors is an integer number (13766310675).

Almost surely, 2^215351153512 is an apocalyptic number.

215351153512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215351153512 is an abundant number, since it is smaller than the sum of its proper divisors (225170788088).

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

215351153512 is a wasteful number, since it uses less digits than its factorization.

215351153512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171937 (or 171933 counting only the distinct ones).

The product of its digits is 22500, while the sum is 34.

It can be divided in two parts, 215351 and 153512, that added together give a palindrome (368863).

The spelling of 215351153512 in words is "two hundred fifteen billion, three hundred fifty-one million, one hundred fifty-three thousand, five hundred twelve".