40381332364191 has 96 divisors (see below), whose sum is σ = 68456263760640. Its totient is φ = 20983774242816.

The previous prime is 40381332364171. The next prime is 40381332364231. The reversal of 40381332364191 is 19146323318304.

It is not a de Polignac number, because 40381332364191 - 2¹³ = 40381332355999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40381332364191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40381332364171) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 55629780 + ... + 56350998.

It is an arithmetic number, because the mean of its divisors is an integer number (713086080840).

Almost surely, 2^{40381332364191} is an apocalyptic number.

40381332364191 is a deficient number, since it is larger than the sum of its proper divisors (28074931396449).

40381332364191 is a wasteful number, since it uses less digits than its factorization.

40381332364191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721685 (or 721678 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 48.

The spelling of 40381332364191 in words is "forty trillion, three hundred eighty-one billion, three hundred thirty-two million, three hundred sixty-four thousand, one hundred ninety-one".