2172692131903 has 2 divisors, whose sum is σ = 2172692131904. Its totient is φ = 2172692131902.

The previous prime is 2172692131867. The next prime is 2172692131919. The reversal of 2172692131903 is 3091312962712.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172692131903 is a prime.

It is a super-2 number, since 2×2172692131903² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172692131403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086346065951 + 1086346065952.

It is an arithmetic number, because the mean of its divisors is an integer number (1086346065952).

Almost surely, 2^{2172692131903} is an apocalyptic number.

2172692131903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172692131903 is an equidigital number, since it uses as much as digits as its factorization.

2172692131903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 2172692131903 in words is "two trillion, one hundred seventy-two billion, six hundred ninety-two million, one hundred thirty-one thousand, nine hundred three".