4002051544 has 16 divisors (see below), whose sum is σ = 7514011800. Its totient is φ = 1998315072.

The previous prime is 4002051539. The next prime is 4002051553. The reversal of 4002051544 is 4451502004.

It is a happy number.

It is a congruent number.

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, 332557 + ... + 344380.

Almost surely, 2^4002051544 is an apocalyptic number.

It is an amenable number.

4002051544 is a deficient number, since it is larger than the sum of its proper divisors (3511960256).

4002051544 is a wasteful number, since it uses less digits than its factorization.

4002051544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677682 (or 677678 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 4002051544 is about 63261.7700036918. The cubic root of 4002051544 is about 1587.6723908435.

Adding to 4002051544 its reverse (4451502004), we get a palindrome (8453553548).

The spelling of 4002051544 in words is "four billion, two million, fifty-one thousand, five hundred forty-four".