240325215561 has 12 divisors (see below), whose sum is σ = 352025668800. Its totient is φ = 157960235160.

The previous prime is 240325215503. The next prime is 240325215563. The reversal of 240325215561 is 165512523042.

240325215561 is a `hidden beast` number, since 2 + 4 + 0 + 32 + 52 + 15 + 561 = 666.

It is not a de Polignac number, because 240325215561 - 2⁶ = 240325215497 is a prime.

It is a super-2 number, since 2×240325215561² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (240325215563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188047261 + ... + 188048538.

It is an arithmetic number, because the mean of its divisors is an integer number (29335472400).

Almost surely, 2^240325215561 is an apocalyptic number.

It is an amenable number.

240325215561 is a deficient number, since it is larger than the sum of its proper divisors (111700453239).

240325215561 is a wasteful number, since it uses less digits than its factorization.

240325215561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376095876 (or 376095873 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 240325215561 in words is "two hundred forty billion, three hundred twenty-five million, two hundred fifteen thousand, five hundred sixty-one".