215053440260 has 24 divisors (see below), whose sum is σ = 462627158616. Its totient is φ = 83923293440.

The previous prime is 215053440253. The next prime is 215053440263. The reversal of 215053440260 is 62044350512.

It can be written as a sum of positive squares in 4 ways, for example, as 1247078596 + 213806361664 = 35314^2 + 462392^2 .

It is a super-2 number, since 2×215053440260² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215053440263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131129327 + ... + 131130966.

It is an arithmetic number, because the mean of its divisors is an integer number (19276131609).

Almost surely, 2^215053440260 is an apocalyptic number.

215053440260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215053440260 is an abundant number, since it is smaller than the sum of its proper divisors (247573718356).

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

215053440260 is a wasteful number, since it uses less digits than its factorization.

215053440260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262260343 (or 262260341 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 215053440260 its reverse (62044350512), we get a palindrome (277097790772).

The spelling of 215053440260 in words is "two hundred fifteen billion, fifty-three million, four hundred forty thousand, two hundred sixty".