7481772453 has 4 divisors (see below), whose sum is σ = 9975696608. Its totient is φ = 4987848300.

The previous prime is 7481772391. The next prime is 7481772457. The reversal of 7481772453 is 3542771847.

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 7481772453 - 2⁸ = 7481772197 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 (7481772457) 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, 1246962073 + ... + 1246962078.

It is an arithmetic number, because the mean of its divisors is an integer number (2493924152).

Almost surely, 2^7481772453 is an apocalyptic number.

It is an amenable number.

7481772453 is a deficient number, since it is larger than the sum of its proper divisors (2493924155).

7481772453 is a wasteful number, since it uses less digits than its factorization.

7481772453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493924154.

The product of its digits is 1317120, while the sum is 48.

The square root of 7481772453 is about 86497.2395686706. The cubic root of 7481772453 is about 1955.8467912396.

The spelling of 7481772453 in words is "seven billion, four hundred eighty-one million, seven hundred seventy-two thousand, four hundred fifty-three".