4006642264644 has 24 divisors (see below), whose sum is σ = 9357988523968. Its totient is φ = 1334239339680.

The previous prime is 4006642264607. The next prime is 4006642264661. The reversal of 4006642264644 is 4464622466004.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4006642264593 and 4006642264602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163497472 + ... + 163521975.

Almost surely, 2^{4006642264644} is an apocalyptic number.

It is an amenable number.

4006642264644 is an abundant number, since it is smaller than the sum of its proper divisors (5351346259324).

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

4006642264644 is a wasteful number, since it uses less digits than its factorization.

4006642264644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327020475 (or 327020473 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 48.

The spelling of 4006642264644 in words is "four trillion, six billion, six hundred forty-two million, two hundred sixty-four thousand, six hundred forty-four".