215034211525540 has 24 divisors (see below), whose sum is σ = 492623830040832. Its totient is φ = 78194258736480.

The previous prime is 215034211525537. The next prime is 215034211525603. The reversal of 215034211525540 is 45525112430512.

It is a junction number, because it is equal to n+sod(n) for n = 215034211525493 and 215034211525502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488714116884 + ... + 488714117323.

It is an arithmetic number, because the mean of its divisors is an integer number (20525992918368).

Almost surely, 2^{215034211525540} is an apocalyptic number.

215034211525540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215034211525540 is an abundant number, since it is smaller than the sum of its proper divisors (277589618515292).

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

215034211525540 is a wasteful number, since it uses less digits than its factorization.

215034211525540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977428234227 (or 977428234225 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 215034211525540 in words is "two hundred fifteen trillion, thirty-four billion, two hundred eleven million, five hundred twenty-five thousand, five hundred forty".