240245561631 has 16 divisors (see below), whose sum is σ = 321289461248. Its totient is φ = 159683400000.

The previous prime is 240245561587. The next prime is 240245561639. The reversal of 240245561631 is 136165542042.

It is not a de Polignac number, because 240245561631 - 2¹³ = 240245553439 is a prime.

It is a super-2 number, since 2×240245561631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240245561631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240245561639) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1265340 + ... + 1442766.

It is an arithmetic number, because the mean of its divisors is an integer number (20080591328).

Almost surely, 2^240245561631 is an apocalyptic number.

240245561631 is a deficient number, since it is larger than the sum of its proper divisors (81043899617).

240245561631 is a wasteful number, since it uses less digits than its factorization.

240245561631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178782.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 240245561631 in words is "two hundred forty billion, two hundred forty-five million, five hundred sixty-one thousand, six hundred thirty-one".