63155952551 has 2 divisors, whose sum is σ = 63155952552. Its totient is φ = 63155952550.

The previous prime is 63155952547. The next prime is 63155952577. The reversal of 63155952551 is 15525955136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63155952551 - 2² = 63155952547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63155952496 and 63155952505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63155952511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31577976275 + 31577976276.

It is an arithmetic number, because the mean of its divisors is an integer number (31577976276).

Almost surely, 2^63155952551 is an apocalyptic number.

63155952551 is a deficient number, since it is larger than the sum of its proper divisors (1).

63155952551 is an equidigital number, since it uses as much as digits as its factorization.

63155952551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1012500, while the sum is 47.

The spelling of 63155952551 in words is "sixty-three billion, one hundred fifty-five million, nine hundred fifty-two thousand, five hundred fifty-one".