4971542681 has 4 divisors (see below), whose sum is σ = 5681763072. Its totient is φ = 4261322292.

The previous prime is 4971542677. The next prime is 4971542687. The reversal of 4971542681 is 1862451794.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 4971542681 - 2² = 4971542677 is a prime.

It is a super-2 number, since 2×4971542681² = 49432473258009335522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4971542687) 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, 355110185 + ... + 355110198.

It is an arithmetic number, because the mean of its divisors is an integer number (1420440768).

Almost surely, 2^4971542681 is an apocalyptic number.

It is an amenable number.

4971542681 is a deficient number, since it is larger than the sum of its proper divisors (710220391).

4971542681 is an equidigital number, since it uses as much as digits as its factorization.

4971542681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710220390.

The product of its digits is 483840, while the sum is 47.

The square root of 4971542681 is about 70509.1673543235. The cubic root of 4971542681 is about 1706.7256838714.

The spelling of 4971542681 in words is "four billion, nine hundred seventy-one million, five hundred forty-two thousand, six hundred eighty-one".