215030526261064 has 64 divisors (see below), whose sum is σ = 421093073649600. Its totient is φ = 102864543581184.

The previous prime is 215030526260989. The next prime is 215030526261101. The reversal of 215030526261064 is 460162625030512.

It is a super-2 number, since 2×215030526261064² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 215030526261064.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29544037 + ... + 36095860.

It is an arithmetic number, because the mean of its divisors is an integer number (6579579275775).

Almost surely, 2^{215030526261064} is an apocalyptic number.

It is an amenable number.

215030526261064 is a deficient number, since it is larger than the sum of its proper divisors (206062547388536).

215030526261064 is a wasteful number, since it uses less digits than its factorization.

215030526261064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65640142 (or 65640138 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 215030526261064 in words is "two hundred fifteen trillion, thirty billion, five hundred twenty-six million, two hundred sixty-one thousand, sixty-four".