40488512761991 has 4 divisors (see below), whose sum is σ = 46272586013712. Its totient is φ = 34704439510272.

The previous prime is 40488512761927. The next prime is 40488512762029. The reversal of 40488512761991 is 19916721588404.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40488512761991 - 2⁶ = 40488512761927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40488512760991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2892036625850 + ... + 2892036625863.

It is an arithmetic number, because the mean of its divisors is an integer number (11568146503428).

Almost surely, 2^{40488512761991} is an apocalyptic number.

40488512761991 is a deficient number, since it is larger than the sum of its proper divisors (5784073251721).

40488512761991 is an equidigital number, since it uses as much as digits as its factorization.

40488512761991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5784073251720.

The product of its (nonzero) digits is 34836480, while the sum is 65.

The spelling of 40488512761991 in words is "forty trillion, four hundred eighty-eight billion, five hundred twelve million, seven hundred sixty-one thousand, nine hundred ninety-one".