16125378791 has 2 divisors, whose sum is σ = 16125378792. Its totient is φ = 16125378790.

The previous prime is 16125378757. The next prime is 16125378817. The reversal of 16125378791 is 19787352161.

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-16125378791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16125378091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8062689395 + 8062689396.

It is an arithmetic number, because the mean of its divisors is an integer number (8062689396).

Almost surely, 2^16125378791 is an apocalyptic number.

16125378791 is a deficient number, since it is larger than the sum of its proper divisors (1).

16125378791 is an equidigital number, since it uses as much as digits as its factorization.

16125378791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 50.

The spelling of 16125378791 in words is "sixteen billion, one hundred twenty-five million, three hundred seventy-eight thousand, seven hundred ninety-one".