400240554125243 has 8 divisors (see below), whose sum is σ = 432499375372848. Its totient is φ = 368191888065504.

The previous prime is 400240554125173. The next prime is 400240554125249. The reversal of 400240554125243 is 342521455042004.

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

It is a cyclic number.

It is not a de Polignac number, because 400240554125243 - 2¹² = 400240554121147 is a prime.

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 400240554125243.

It is not an unprimeable number, because it can be changed into a prime (400240554125249) 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, 52538793005 + ... + 52538800622.

It is an arithmetic number, because the mean of its divisors is an integer number (54062421921606).

Almost surely, 2^{400240554125243} is an apocalyptic number.

400240554125243 is a deficient number, since it is larger than the sum of its proper divisors (32258821247605).

400240554125243 is a wasteful number, since it uses less digits than its factorization.

400240554125243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105077593933.

The product of its (nonzero) digits is 768000, while the sum is 41.

The spelling of 400240554125243 in words is "four hundred trillion, two hundred forty billion, five hundred fifty-four million, one hundred twenty-five thousand, two hundred forty-three".