274807201721 has 16 divisors (see below), whose sum is σ = 313574461200. Its totient is φ = 238579181568.

The previous prime is 274807201699. The next prime is 274807201729. The reversal of 274807201721 is 127102708472.

It can be written as a sum of positive squares in 8 ways, for example, as 55655887225 + 219151314496 = 235915^2 + 468136^2 .

It is a de Polignac number, because none of the positive numbers 2^k-274807201721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (274807201729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119276 + ... + 750893.

It is an arithmetic number, because the mean of its divisors is an integer number (19598403825).

Almost surely, 2^274807201721 is an apocalyptic number.

It is an amenable number.

274807201721 is a deficient number, since it is larger than the sum of its proper divisors (38767259479).

274807201721 is a wasteful number, since it uses less digits than its factorization.

274807201721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871628.

The product of its (nonzero) digits is 87808, while the sum is 41.

The spelling of 274807201721 in words is "two hundred seventy-four billion, eight hundred seven million, two hundred one thousand, seven hundred twenty-one".