215150640531 has 8 divisors (see below), whose sum is σ = 288098712720. Its totient is φ = 142818164352.

The previous prime is 215150640511. The next prime is 215150640557. The reversal of 215150640531 is 135046051512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215150640531 - 2²⁹ = 214613769619 is a prime.

It is a super-2 number, since 2×215150640531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215150640492 and 215150640501.

It is not an unprimeable number, because it can be changed into a prime (215150640511) 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, 153898186 + ... + 153899583.

It is an arithmetic number, because the mean of its divisors is an integer number (36012339090).

Almost surely, 2^215150640531 is an apocalyptic number.

215150640531 is a deficient number, since it is larger than the sum of its proper divisors (72948072189).

215150640531 is a wasteful number, since it uses less digits than its factorization.

215150640531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307798005.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 215150640531 in words is "two hundred fifteen billion, one hundred fifty million, six hundred forty thousand, five hundred thirty-one".