240166400424431 has 4 divisors (see below), whose sum is σ = 258640738918632. Its totient is φ = 221692061930232.

The previous prime is 240166400424427. The next prime is 240166400424481. The reversal of 240166400424431 is 134424004661042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240166400424431 - 2² = 240166400424427 is a prime.

It is a super-2 number, since 2×240166400424431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240166400424481) 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, 9237169247081 + ... + 9237169247106.

It is an arithmetic number, because the mean of its divisors is an integer number (64660184729658).

Almost surely, 2^{240166400424431} is an apocalyptic number.

240166400424431 is a deficient number, since it is larger than the sum of its proper divisors (18474338494201).

240166400424431 is a wasteful number, since it uses less digits than its factorization.

240166400424431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18474338494200.

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 240166400424431 in words is "two hundred forty trillion, one hundred sixty-six billion, four hundred million, four hundred twenty-four thousand, four hundred thirty-one".