5431620261 has 8 divisors (see below), whose sum is σ = 7341368320. Its totient is φ = 3571476192.

The previous prime is 5431620251. The next prime is 5431620281. The reversal of 5431620261 is 1620261345.

5431620261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5431620261 - 2⁶ = 5431620197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5431620251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12400741 + ... + 12401178.

It is an arithmetic number, because the mean of its divisors is an integer number (917671040).

Almost surely, 2^5431620261 is an apocalyptic number.

It is an amenable number.

5431620261 is a deficient number, since it is larger than the sum of its proper divisors (1909748059).

5431620261 is a wasteful number, since it uses less digits than its factorization.

5431620261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24801995.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 5431620261 is about 73699.5268709372. The cubic root of 5431620261 is about 1757.8283585810.

The spelling of 5431620261 in words is "five billion, four hundred thirty-one million, six hundred twenty thousand, two hundred sixty-one".