400145050117 has 2 divisors, whose sum is σ = 400145050118. Its totient is φ = 400145050116.

The previous prime is 400145050103. The next prime is 400145050177. The reversal of 400145050117 is 711050541004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207740877796 + 192404172321 = 455786^2 + 438639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400145050117 is a prime.

It is a super-2 number, since 2×400145050117² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400145050177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200072525058 + 200072525059.

It is an arithmetic number, because the mean of its divisors is an integer number (200072525059).

Almost surely, 2^400145050117 is an apocalyptic number.

It is an amenable number.

400145050117 is a deficient number, since it is larger than the sum of its proper divisors (1).

400145050117 is an equidigital number, since it uses as much as digits as its factorization.

400145050117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 28.

The spelling of 400145050117 in words is "four hundred billion, one hundred forty-five million, fifty thousand, one hundred seventeen".