240677436561 has 8 divisors (see below), whose sum is σ = 321928500000. Its totient is φ = 159938998752.

The previous prime is 240677436529. The next prime is 240677436611. The reversal of 240677436561 is 165634776042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 240677436561 - 2⁵ = 240677436529 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (240677436061) 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, 128155311 + ... + 128157188.

It is an arithmetic number, because the mean of its divisors is an integer number (40241062500).

Almost surely, 2^240677436561 is an apocalyptic number.

It is an amenable number.

240677436561 is a deficient number, since it is larger than the sum of its proper divisors (81251063439).

240677436561 is a wasteful number, since it uses less digits than its factorization.

240677436561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256312815.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 240677436561 in words is "two hundred forty billion, six hundred seventy-seven million, four hundred thirty-six thousand, five hundred sixty-one".