40979764799 has 4 divisors (see below), whose sum is σ = 40980440040. Its totient is φ = 40979089560.

The previous prime is 40979764781. The next prime is 40979764801. The reversal of 40979764799 is 99746797904.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40979764799 is a prime.

It is a super-2 number, since 2×40979764799² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40979766799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236489 + ... + 371330.

It is an arithmetic number, because the mean of its divisors is an integer number (10245110010).

Almost surely, 2^40979764799 is an apocalyptic number.

40979764799 is a deficient number, since it is larger than the sum of its proper divisors (675241).

40979764799 is an equidigital number, since it uses as much as digits as its factorization.

40979764799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675240.

The product of its (nonzero) digits is 216040608, while the sum is 71.

The spelling of 40979764799 in words is "forty billion, nine hundred seventy-nine million, seven hundred sixty-four thousand, seven hundred ninety-nine".