40981912999 has 4 divisors (see below), whose sum is σ = 41070811320. Its totient is φ = 40893014680.

The previous prime is 40981912967. The next prime is 40981913009. The reversal of 40981912999 is 99921918904.

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

It is a cyclic number.

It is not a de Polignac number, because 40981912999 - 2⁵ = 40981912967 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 (40981912199) 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, 44448469 + ... + 44449390.

It is an arithmetic number, because the mean of its divisors is an integer number (10267702830).

Almost surely, 2^40981912999 is an apocalyptic number.

40981912999 is a deficient number, since it is larger than the sum of its proper divisors (88898321).

40981912999 is an equidigital number, since it uses as much as digits as its factorization.

40981912999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88898320.

The product of its (nonzero) digits is 3779136, while the sum is 61.

The spelling of 40981912999 in words is "forty billion, nine hundred eighty-one million, nine hundred twelve thousand, nine hundred ninety-nine".