4977947551 has 4 divisors (see below), whose sum is σ = 5112486712. Its totient is φ = 4843408392.

The previous prime is 4977947549. The next prime is 4977947561. The reversal of 4977947551 is 1557497794.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1557497794 = 2 ⋅778748897.

It is a cyclic number.

It is not a de Polignac number, because 4977947551 - 2¹ = 4977947549 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 (4977947521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67269525 + ... + 67269598.

It is an arithmetic number, because the mean of its divisors is an integer number (1278121678).

Almost surely, 2^4977947551 is an apocalyptic number.

4977947551 is a deficient number, since it is larger than the sum of its proper divisors (134539161).

4977947551 is a wasteful number, since it uses less digits than its factorization.

4977947551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134539160.

The product of its digits is 11113200, while the sum is 58.

The square root of 4977947551 is about 70554.5714394184. The cubic root of 4977947551 is about 1707.4582978625.

The spelling of 4977947551 in words is "four billion, nine hundred seventy-seven million, nine hundred forty-seven thousand, five hundred fifty-one".