7272809461 has 4 divisors (see below), whose sum is σ = 7589018592. Its totient is φ = 6956600332.

The previous prime is 7272809437. The next prime is 7272809519. The reversal of 7272809461 is 1649082727.

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 not a de Polignac number, because 7272809461 - 2¹³ = 7272801269 is a prime.

It is a super-2 number, since 2×7272809461² (a number of 21 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 (7272809861) 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, 158104531 + ... + 158104576.

It is an arithmetic number, because the mean of its divisors is an integer number (1897254648).

Almost surely, 2^7272809461 is an apocalyptic number.

It is an amenable number.

7272809461 is a deficient number, since it is larger than the sum of its proper divisors (316209131).

7272809461 is a wasteful number, since it uses less digits than its factorization.

7272809461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316209130.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 7272809461 is about 85280.7684123449. The cubic root of 7272809461 is about 1937.4659106094.

The spelling of 7272809461 in words is "seven billion, two hundred seventy-two million, eight hundred nine thousand, four hundred sixty-one".