215345543512 has 32 divisors (see below), whose sum is σ = 440504341200. Its totient is φ = 97878822400.

The previous prime is 215345543507. The next prime is 215345543519.

215345543512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×215345543512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215345543519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782564 + ... + 1899532.

Almost surely, 2^215345543512 is an apocalyptic number.

215345543512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215345543512 is an abundant number, since it is smaller than the sum of its proper divisors (225158797688).

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

215345543512 is a wasteful number, since it uses less digits than its factorization.

215345543512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137907 (or 137903 counting only the distinct ones).

The product of its digits is 360000, while the sum is 40.

It can be divided in two parts, 215345 and 543512, that added together give a palindrome (758857).

The spelling of 215345543512 in words is "two hundred fifteen billion, three hundred forty-five million, five hundred forty-three thousand, five hundred twelve".