3974559552861 has 4 divisors (see below), whose sum is σ = 5299412737152. Its totient is φ = 2649706368572.

The previous prime is 3974559552811. The next prime is 3974559552871. The reversal of 3974559552861 is 1682559554793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3974559552861 - 2²⁹ = 3974022681949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974559552811) 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, 662426592141 + ... + 662426592146.

It is an arithmetic number, because the mean of its divisors is an integer number (1324853184288).

Almost surely, 2^{3974559552861} is an apocalyptic number.

It is an amenable number.

3974559552861 is a deficient number, since it is larger than the sum of its proper divisors (1324853184291).

3974559552861 is a wasteful number, since it uses less digits than its factorization.

3974559552861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324853184290.

The product of its digits is 408240000, while the sum is 69.

The spelling of 3974559552861 in words is "three trillion, nine hundred seventy-four billion, five hundred fifty-nine million, five hundred fifty-two thousand, eight hundred sixty-one".