4972606781 has 2 divisors, whose sum is σ = 4972606782. Its totient is φ = 4972606780.

The previous prime is 4972606733. The next prime is 4972606799. The reversal of 4972606781 is 1876062794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4835950681 + 136656100 = 69541^2 + 11690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4972606781 is a prime.

It is a super-2 number, since 2×4972606781² = 49453636396894363922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4972603781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2486303390 + 2486303391.

It is an arithmetic number, because the mean of its divisors is an integer number (2486303391).

Almost surely, 2^4972606781 is an apocalyptic number.

It is an amenable number.

4972606781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4972606781 is an equidigital number, since it uses as much as digits as its factorization.

4972606781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 4972606781 is about 70516.7127778940. The cubic root of 4972606781 is about 1706.8474433438.

The spelling of 4972606781 in words is "four billion, nine hundred seventy-two million, six hundred six thousand, seven hundred eighty-one".