20374777107161 has 4 divisors (see below), whose sum is σ = 20400666278352. Its totient is φ = 20348887935972.

The previous prime is 20374777107137. The next prime is 20374777107193. The reversal of 20374777107161 is 16170177747302.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-20374777107161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20374777107661) 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, 12944584415 + ... + 12944585988.

It is an arithmetic number, because the mean of its divisors is an integer number (5100166569588).

Almost surely, 2^{20374777107161} is an apocalyptic number.

It is an amenable number.

20374777107161 is a deficient number, since it is larger than the sum of its proper divisors (25889171191).

20374777107161 is an equidigital number, since it uses as much as digits as its factorization.

20374777107161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25889171190.

The product of its (nonzero) digits is 2420208, while the sum is 53.

The spelling of 20374777107161 in words is "twenty trillion, three hundred seventy-four billion, seven hundred seventy-seven million, one hundred seven thousand, one hundred sixty-one".