215055164540 has 12 divisors (see below), whose sum is σ = 451615845576. Its totient is φ = 86022065808.

The previous prime is 215055164497. The next prime is 215055164543. The reversal of 215055164540 is 45461550512.

It is a junction number, because it is equal to n+sod(n) for n = 215055164494 and 215055164503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215055164543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5376379094 + ... + 5376379133.

It is an arithmetic number, because the mean of its divisors is an integer number (37634653798).

Almost surely, 2^215055164540 is an apocalyptic number.

215055164540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215055164540 is an abundant number, since it is smaller than the sum of its proper divisors (236560681036).

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

215055164540 is a wasteful number, since it uses less digits than its factorization.

215055164540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10752758236 (or 10752758234 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 215055164540 in words is "two hundred fifteen billion, fifty-five million, one hundred sixty-four thousand, five hundred forty".