109992721529 has 2 divisors, whose sum is σ = 109992721530. Its totient is φ = 109992721528.

The previous prime is 109992721523. The next prime is 109992721577. The reversal of 109992721529 is 925127299901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109990395904 + 2325625 = 331648^2 + 1525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109992721529 is a prime.

It is a super-2 number, since 2×109992721529² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109992721523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54996360764 + 54996360765.

It is an arithmetic number, because the mean of its divisors is an integer number (54996360765).

Almost surely, 2^109992721529 is an apocalyptic number.

It is an amenable number.

109992721529 is a deficient number, since it is larger than the sum of its proper divisors (1).

109992721529 is an equidigital number, since it uses as much as digits as its factorization.

109992721529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The spelling of 109992721529 in words is "one hundred nine billion, nine hundred ninety-two million, seven hundred twenty-one thousand, five hundred twenty-nine".