63516213215 has 64 divisors (see below), whose sum is σ = 94372024320. Its totient is φ = 39963110400.

The previous prime is 63516213209. The next prime is 63516213227. The reversal of 63516213215 is 51231261536.

It is not a de Polignac number, because 63516213215 - 2⁴ = 63516213199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98170022 + ... + 98170668.

It is an arithmetic number, because the mean of its divisors is an integer number (1474562880).

Almost surely, 2^63516213215 is an apocalyptic number.

63516213215 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

63516213215 is a deficient number, since it is larger than the sum of its proper divisors (30855811105).

63516213215 is a wasteful number, since it uses less digits than its factorization.

63516213215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632.

The product of its digits is 32400, while the sum is 35.

The spelling of 63516213215 in words is "sixty-three billion, five hundred sixteen million, two hundred thirteen thousand, two hundred fifteen".