47742530261 has 4 divisors (see below), whose sum is σ = 50550914412. Its totient is φ = 44934146112.

The previous prime is 47742530203. The next prime is 47742530281. The reversal of 47742530261 is 16203524774.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21682562500 + 26059967761 = 147250^2 + 161431^2 .

It is a cyclic number.

It is not a de Polignac number, because 47742530261 - 2¹⁴ = 47742513877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47742530281) 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, 1404192050 + ... + 1404192083.

It is an arithmetic number, because the mean of its divisors is an integer number (12637728603).

Almost surely, 2^47742530261 is an apocalyptic number.

It is an amenable number.

47742530261 is a deficient number, since it is larger than the sum of its proper divisors (2808384151).

47742530261 is a wasteful number, since it uses less digits than its factorization.

47742530261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808384150.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 47742530261 in words is "forty-seven billion, seven hundred forty-two million, five hundred thirty thousand, two hundred sixty-one".