40401400517 has 2 divisors, whose sum is σ = 40401400518. Its totient is φ = 40401400516.

The previous prime is 40401400499. The next prime is 40401400537. The reversal of 40401400517 is 71500410404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33533300641 + 6868099876 = 183121^2 + 82874^2 .

It is a cyclic number.

It is not a de Polignac number, because 40401400517 - 2⁶ = 40401400453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40401400537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200700258 + 20200700259.

It is an arithmetic number, because the mean of its divisors is an integer number (20200700259).

Almost surely, 2^40401400517 is an apocalyptic number.

It is an amenable number.

40401400517 is a deficient number, since it is larger than the sum of its proper divisors (1).

40401400517 is an equidigital number, since it uses as much as digits as its factorization.

40401400517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The spelling of 40401400517 in words is "forty billion, four hundred one million, four hundred thousand, five hundred seventeen".