215512355020 has 48 divisors (see below), whose sum is σ = 460338117120. Its totient is φ = 84727014336.

The previous prime is 215512354949. The next prime is 215512355027. The reversal of 215512355020 is 20553215512.

It is not an unprimeable number, because it can be changed into a prime (215512355027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7115629 + ... + 7145851.

It is an arithmetic number, because the mean of its divisors is an integer number (9590377440).

Almost surely, 2^215512355020 is an apocalyptic number.

215512355020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215512355020 is an abundant number, since it is smaller than the sum of its proper divisors (244825762100).

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

215512355020 is a wasteful number, since it uses less digits than its factorization.

215512355020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36334 (or 36332 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 215512355020 in words is "two hundred fifteen billion, five hundred twelve million, three hundred fifty-five thousand, twenty".