318625278551 has 2 divisors, whose sum is σ = 318625278552. Its totient is φ = 318625278550.

The previous prime is 318625278541. The next prime is 318625278581. The reversal of 318625278551 is 155872526813.

It is a weak prime.

It is an emirp because it is prime and its reverse (155872526813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318625278551 - 2²² = 318621084247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318625278493 and 318625278502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318625278511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159312639275 + 159312639276.

It is an arithmetic number, because the mean of its divisors is an integer number (159312639276).

Almost surely, 2^318625278551 is an apocalyptic number.

318625278551 is a deficient number, since it is larger than the sum of its proper divisors (1).

318625278551 is an equidigital number, since it uses as much as digits as its factorization.

318625278551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032000, while the sum is 53.

The spelling of 318625278551 in words is "three hundred eighteen billion, six hundred twenty-five million, two hundred seventy-eight thousand, five hundred fifty-one".