2421892167191 has 6 divisors (see below), whose sum is σ = 2817303133320. Its totient is φ = 2075907571836.

The previous prime is 2421892167187. The next prime is 2421892167217. The reversal of 2421892167191 is 1917612981242.

It is not a de Polignac number, because 2421892167191 - 2² = 2421892167187 is a prime.

It is a super-2 number, since 2×2421892167191² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421892167151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24713185331 + ... + 24713185428.

It is an arithmetic number, because the mean of its divisors is an integer number (469550522220).

Almost surely, 2^{2421892167191} is an apocalyptic number.

2421892167191 is a deficient number, since it is larger than the sum of its proper divisors (395410966129).

2421892167191 is an equidigital number, since it uses as much as digits as its factorization.

2421892167191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49426370773 (or 49426370766 counting only the distinct ones).

The product of its digits is 870912, while the sum is 53.

The spelling of 2421892167191 in words is "two trillion, four hundred twenty-one billion, eight hundred ninety-two million, one hundred sixty-seven thousand, one hundred ninety-one".