347677642421 has 4 divisors (see below), whose sum is σ = 347708391744. Its totient is φ = 347646893100.

The previous prime is 347677642399. The next prime is 347677642447. The reversal of 347677642421 is 124246776743.

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 347677642421 - 2³⁴ = 330497773237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347677642021) 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, 15357695 + ... + 15380316.

It is an arithmetic number, because the mean of its divisors is an integer number (86927097936).

Almost surely, 2^347677642421 is an apocalyptic number.

It is an amenable number.

347677642421 is a deficient number, since it is larger than the sum of its proper divisors (30749323).

347677642421 is a wasteful number, since it uses less digits than its factorization.

347677642421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30749322.

The product of its digits is 9483264, while the sum is 53.

The spelling of 347677642421 in words is "three hundred forty-seven billion, six hundred seventy-seven million, six hundred forty-two thousand, four hundred twenty-one".