4000908738945 has 32 divisors (see below), whose sum is σ = 6740744140800. Its totient is φ = 2020800325824.

The previous prime is 4000908738917. The next prime is 4000908738991. The reversal of 4000908738945 is 5498378090004.

It is not a de Polignac number, because 4000908738945 - 2¹⁴ = 4000908722561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1658665 + ... + 3279174.

It is an arithmetic number, because the mean of its divisors is an integer number (210648254400).

Almost surely, 2^{4000908738945} is an apocalyptic number.

It is an amenable number.

4000908738945 is a deficient number, since it is larger than the sum of its proper divisors (2739835401855).

4000908738945 is a wasteful number, since it uses less digits than its factorization.

4000908738945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940709.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 4000908738945 in words is "four trillion, nine hundred eight million, seven hundred thirty-eight thousand, nine hundred forty-five".