4978694551 has 2 divisors, whose sum is σ = 4978694552. Its totient is φ = 4978694550.

The previous prime is 4978694543. The next prime is 4978694557. The reversal of 4978694551 is 1554968794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4978694551 - 2³ = 4978694543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4978694557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489347275 + 2489347276.

It is an arithmetic number, because the mean of its divisors is an integer number (2489347276).

Almost surely, 2^4978694551 is an apocalyptic number.

4978694551 is a deficient number, since it is larger than the sum of its proper divisors (1).

4978694551 is an equidigital number, since it uses as much as digits as its factorization.

4978694551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 58.

The square root of 4978694551 is about 70559.8650154605. The cubic root of 4978694551 is about 1707.5437017055.

The spelling of 4978694551 in words is "four billion, nine hundred seventy-eight million, six hundred ninety-four thousand, five hundred fifty-one".