215071178132 has 6 divisors (see below), whose sum is σ = 376374561738. Its totient is φ = 107535589064.

The previous prime is 215071178123. The next prime is 215071178143. The reversal of 215071178132 is 231871170512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 140605500676 + 74465677456 = 374974^2 + 272884^2 .

It is a super-2 number, since 2×215071178132² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26883897263 + ... + 26883897270.

It is an arithmetic number, because the mean of its divisors is an integer number (62729093623).

Almost surely, 2^215071178132 is an apocalyptic number.

It is an amenable number.

215071178132 is a deficient number, since it is larger than the sum of its proper divisors (161303383606).

215071178132 is a wasteful number, since it uses less digits than its factorization.

215071178132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53767794537 (or 53767794535 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 38.

The spelling of 215071178132 in words is "two hundred fifteen billion, seventy-one million, one hundred seventy-eight thousand, one hundred thirty-two".