274426072781 has 4 divisors (see below), whose sum is σ = 313629797472. Its totient is φ = 235222348092.

The previous prime is 274426072759. The next prime is 274426072847. The reversal of 274426072781 is 187270624472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 274426072781 - 2²⁶ = 274358963917 is a prime.

It is a super-2 number, since 2×274426072781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274426072751) 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, 19601862335 + ... + 19601862348.

It is an arithmetic number, because the mean of its divisors is an integer number (78407449368).

Almost surely, 2^274426072781 is an apocalyptic number.

It is an amenable number.

274426072781 is a deficient number, since it is larger than the sum of its proper divisors (39203724691).

274426072781 is an equidigital number, since it uses as much as digits as its factorization.

274426072781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39203724690.

The product of its (nonzero) digits is 2107392, while the sum is 50.

The spelling of 274426072781 in words is "two hundred seventy-four billion, four hundred twenty-six million, seventy-two thousand, seven hundred eighty-one".