16157121703 has 2 divisors, whose sum is σ = 16157121704. Its totient is φ = 16157121702.

The previous prime is 16157121679. The next prime is 16157121733. The reversal of 16157121703 is 30712175161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16157121703 - 2⁹ = 16157121191 is a prime.

It is a super-2 number, since 2×16157121703² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16157121733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8078560851 + 8078560852.

It is an arithmetic number, because the mean of its divisors is an integer number (8078560852).

Almost surely, 2^16157121703 is an apocalyptic number.

16157121703 is a deficient number, since it is larger than the sum of its proper divisors (1).

16157121703 is an equidigital number, since it uses as much as digits as its factorization.

16157121703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 34.

Adding to 16157121703 its reverse (30712175161), we get a palindrome (46869296864).

The spelling of 16157121703 in words is "sixteen billion, one hundred fifty-seven million, one hundred twenty-one thousand, seven hundred three".