701270581561 has 9 divisors (see below), whose sum is σ = 770828202543. Its totient is φ = 637510336320.

The previous prime is 701270581547. The next prime is 701270581619. The reversal of 701270581561 is 165185072107.

The square root of 701270581561 is 837419.

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

It can be written as a sum of positive squares in only one way, i.e., 643555323961 + 57715257600 = 802219^2 + 240240^2 .

It is not a de Polignac number, because 701270581561 - 2¹⁹ = 701270057273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (701270581511) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9173545 + ... + 9249673.

Almost surely, 2^701270581561 is an apocalyptic number.

701270581561 is the 837419-th square number.

701270581561 is the 418710-th centered octagonal number.

It is an amenable number.

701270581561 is a deficient number, since it is larger than the sum of its proper divisors (69557620982).

701270581561 is an frugal number, since it uses more digits than its factorization.

701270581561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152280 (or 76140 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 43.

The spelling of 701270581561 in words is "seven hundred one billion, two hundred seventy million, five hundred eighty-one thousand, five hundred sixty-one".