421957960700161 has 4 divisors (see below), whose sum is σ = 421964320631472. Its totient is φ = 421951600768852.

The previous prime is 421957960700131. The next prime is 421957960700219. The reversal of 421957960700161 is 161007069759124.

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-421957960700161 is a prime.

It is a super-2 number, since 2×421957960700161² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421957960700096 and 421957960700105.

It is not an unprimeable number, because it can be changed into a prime (421957960700131) 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, 3179866135 + ... + 3179998828.

It is an arithmetic number, because the mean of its divisors is an integer number (105491080157868).

Almost surely, 2^{421957960700161} is an apocalyptic number.

It is an amenable number.

421957960700161 is a deficient number, since it is larger than the sum of its proper divisors (6359931311).

421957960700161 is an equidigital number, since it uses as much as digits as its factorization.

421957960700161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6359931310.

The product of its (nonzero) digits is 5715360, while the sum is 58.

The spelling of 421957960700161 in words is "four hundred twenty-one trillion, nine hundred fifty-seven billion, nine hundred sixty million, seven hundred thousand, one hundred sixty-one".