40500215731399 has 2 divisors, whose sum is σ = 40500215731400. Its totient is φ = 40500215731398.

The previous prime is 40500215731397. The next prime is 40500215731447. The reversal of 40500215731399 is 99313751200504.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40500215731399 - 2¹ = 40500215731397 is a prime.

Together with 40500215731397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40500215731397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20250107865699 + 20250107865700.

It is an arithmetic number, because the mean of its divisors is an integer number (20250107865700).

Almost surely, 2^{40500215731399} is an apocalyptic number.

40500215731399 is a deficient number, since it is larger than the sum of its proper divisors (1).

40500215731399 is an equidigital number, since it uses as much as digits as its factorization.

40500215731399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 40500215731399 in words is "forty trillion, five hundred billion, two hundred fifteen million, seven hundred thirty-one thousand, three hundred ninety-nine".