1351110991129 has 3 divisors (see below), whose sum is σ = 1351112153503. Its totient is φ = 1351109828756.

The previous prime is 1351110991121. The next prime is 1351110991141. The reversal of 1351110991129 is 9211990111531.

The square root of 1351110991129 is 1162373.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1349767622025 + 1343369104 = 1161795^2 + 36652^2 .

It is not a de Polignac number, because 1351110991129 - 2³ = 1351110991121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351110991121) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 581187 + ... + 1743559.

Almost surely, 2^{1351110991129} is an apocalyptic number.

1351110991129 is the 1162373-rd square number.

1351110991129 is the 581187-th centered octagonal number.

It is an amenable number.

1351110991129 is a deficient number, since it is larger than the sum of its proper divisors (1162374).

1351110991129 is an frugal number, since it uses more digits than its factorization.

1351110991129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324746 (or 1162373 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 43.

The spelling of 1351110991129 in words is "one trillion, three hundred fifty-one billion, one hundred ten million, nine hundred ninety-one thousand, one hundred twenty-nine".