215511513010002 has 48 divisors (see below), whose sum is σ = 509425867828800. Its totient is φ = 65302029492000.

The previous prime is 215511513009959. The next prime is 215511513010063. The reversal of 215511513010002 is 200010315115512.

It is a happy number.

215511513010002 is a `hidden beast` number, since 2 + 1 + 5 + 511 + 5 + 130 + 10 + 0 + 0 + 2 = 666.

It is a super-2 number, since 2×215511513010002² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34525374 + ... + 40286777.

It is an arithmetic number, because the mean of its divisors is an integer number (10613038913100).

Almost surely, 2^{215511513010002} is an apocalyptic number.

215511513010002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

215511513010002 is an abundant number, since it is smaller than the sum of its proper divisors (293914354818798).

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

215511513010002 is a wasteful number, since it uses less digits than its factorization.

215511513010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74826719 (or 74826716 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

Adding to 215511513010002 its reverse (200010315115512), we get a palindrome (415521828125514).

The spelling of 215511513010002 in words is "two hundred fifteen trillion, five hundred eleven billion, five hundred thirteen million, ten thousand, two".