40993923318 has 32 divisors (see below), whose sum is σ = 86842368000. Its totient is φ = 12856141440.

The previous prime is 40993923317. The next prime is 40993923343. The reversal of 40993923318 is 81332939904.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40993923317) 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 15 ways as a sum of consecutive naturals, for example, 212683 + ... + 356681.

It is an arithmetic number, because the mean of its divisors is an integer number (2713824000).

Almost surely, 2^40993923318 is an apocalyptic number.

40993923318 is an abundant number, since it is smaller than the sum of its proper divisors (45848444682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40993923318 is a wasteful number, since it uses less digits than its factorization.

40993923318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146812.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The spelling of 40993923318 in words is "forty billion, nine hundred ninety-three million, nine hundred twenty-three thousand, three hundred eighteen".