1081742767251 has 4 divisors (see below), whose sum is σ = 1442323689672. Its totient is φ = 721161844832.

The previous prime is 1081742767229. The next prime is 1081742767291. The reversal of 1081742767251 is 1527672471801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1081742767251 - 2⁹ = 1081742766739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1081742767194 and 1081742767203.

It is not an unprimeable number, because it can be changed into a prime (1081742767291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180290461206 + ... + 180290461211.

It is an arithmetic number, because the mean of its divisors is an integer number (360580922418).

Almost surely, 2^{1081742767251} is an apocalyptic number.

1081742767251 is a deficient number, since it is larger than the sum of its proper divisors (360580922421).

1081742767251 is an equidigital number, since it uses as much as digits as its factorization.

1081742767251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360580922420.

The product of its (nonzero) digits is 1317120, while the sum is 51.

The spelling of 1081742767251 in words is "one trillion, eighty-one billion, seven hundred forty-two million, seven hundred sixty-seven thousand, two hundred fifty-one".