4023974981940 has 48 divisors (see below), whose sum is σ = 11341746729600. Its totient is φ = 1065953635200.

The previous prime is 4023974981903. The next prime is 4023974982017. The reversal of 4023974981940 is 491894793204.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222064615 + ... + 222082734.

It is an arithmetic number, because the mean of its divisors is an integer number (236286390200).

Almost surely, 2^{4023974981940} is an apocalyptic number.

It is an amenable number.

4023974981940 is an abundant number, since it is smaller than the sum of its proper divisors (7317771747660).

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

4023974981940 is a wasteful number, since it uses less digits than its factorization.

4023974981940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444147512 (or 444147510 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 4023974981940 in words is "four trillion, twenty-three billion, nine hundred seventy-four million, nine hundred eighty-one thousand, nine hundred forty".