7471881057 has 4 divisors (see below), whose sum is σ = 9962508080. Its totient is φ = 4981254036.

The previous prime is 7471881013. The next prime is 7471881061. The reversal of 7471881057 is 7501881747.

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 7471881057 - 2²⁷ = 7337663329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7471880997 and 7471881015.

It is not an unprimeable number, because it can be changed into a prime (7471881077) 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, 1245313507 + ... + 1245313512.

It is an arithmetic number, because the mean of its divisors is an integer number (2490627020).

Almost surely, 2^7471881057 is an apocalyptic number.

It is an amenable number.

7471881057 is a deficient number, since it is larger than the sum of its proper divisors (2490627023).

7471881057 is a wasteful number, since it uses less digits than its factorization.

7471881057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490627022.

The product of its (nonzero) digits is 439040, while the sum is 48.

The square root of 7471881057 is about 86440.0431339550. The cubic root of 7471881057 is about 1954.9844916931.

The spelling of 7471881057 in words is "seven billion, four hundred seventy-one million, eight hundred eighty-one thousand, fifty-seven".