4000981719394 has 8 divisors (see below), whose sum is σ = 6547060995408. Its totient is φ = 1818628054260.

The previous prime is 4000981719373. The next prime is 4000981719409. The reversal of 4000981719394 is 4939171890004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90931402692 + ... + 90931402735.

It is an arithmetic number, because the mean of its divisors is an integer number (818382624426).

Almost surely, 2^{4000981719394} is an apocalyptic number.

4000981719394 is a deficient number, since it is larger than the sum of its proper divisors (2546079276014).

4000981719394 is a wasteful number, since it uses less digits than its factorization.

4000981719394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181862805440.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 4000981719394 in words is "four trillion, nine hundred eighty-one million, seven hundred nineteen thousand, three hundred ninety-four".