20146167330421 has 4 divisors (see below), whose sum is σ = 21977637087744. Its totient is φ = 18314697573100.

The previous prime is 20146167330409. The next prime is 20146167330427. The reversal of 20146167330421 is 12403376164102.

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 20146167330421 - 2²¹ = 20146165233269 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 (20146167330427) 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, 915734878645 + ... + 915734878666.

It is an arithmetic number, because the mean of its divisors is an integer number (5494409271936).

Almost surely, 2^{20146167330421} is an apocalyptic number.

It is an amenable number.

20146167330421 is a deficient number, since it is larger than the sum of its proper divisors (1831469757323).

20146167330421 is a wasteful number, since it uses less digits than its factorization.

20146167330421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831469757322.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 20146167330421 in words is "twenty trillion, one hundred forty-six billion, one hundred sixty-seven million, three hundred thirty thousand, four hundred twenty-one".