63279255551 has 2 divisors, whose sum is σ = 63279255552. Its totient is φ = 63279255550.

The previous prime is 63279255547. The next prime is 63279255569. The reversal of 63279255551 is 15555297236.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63279255551 - 2² = 63279255547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63279255551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63279255521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31639627775 + 31639627776.

It is an arithmetic number, because the mean of its divisors is an integer number (31639627776).

Almost surely, 2^63279255551 is an apocalyptic number.

63279255551 is a deficient number, since it is larger than the sum of its proper divisors (1).

63279255551 is an equidigital number, since it uses as much as digits as its factorization.

63279255551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2835000, while the sum is 50.

The spelling of 63279255551 in words is "sixty-three billion, two hundred seventy-nine million, two hundred fifty-five thousand, five hundred fifty-one".