3877452003581 has 4 divisors (see below), whose sum is σ = 4175717542332. Its totient is φ = 3579186464832.

The previous prime is 3877452003571. The next prime is 3877452003599. The reversal of 3877452003581 is 1853002547783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1326113464900 + 2551338538681 = 1151570^2 + 1597291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3877452003581 is a prime.

It is a super-2 number, since 2×3877452003581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3877452003571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149132769356 + ... + 149132769381.

It is an arithmetic number, because the mean of its divisors is an integer number (1043929385583).

Almost surely, 2^{3877452003581} is an apocalyptic number.

It is an amenable number.

3877452003581 is a deficient number, since it is larger than the sum of its proper divisors (298265538751).

3877452003581 is a wasteful number, since it uses less digits than its factorization.

3877452003581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298265538750.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 3877452003581 in words is "three trillion, eight hundred seventy-seven billion, four hundred fifty-two million, three thousand, five hundred eighty-one".