63499132019421 has 64 divisors (see below), whose sum is σ = 111598649971200. Its totient is φ = 34914433010688.

The previous prime is 63499132019417. The next prime is 63499132019483. The reversal of 63499132019421 is 12491023199436.

63499132019421 is a `hidden beast` number, since 6 + 3 + 4 + 9 + 9 + 1 + 3 + 201 + 9 + 421 = 666.

It is not a de Polignac number, because 63499132019421 - 2² = 63499132019417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63499132019821) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18164236 + ... + 21376101.

It is an arithmetic number, because the mean of its divisors is an integer number (1743728905800).

Almost surely, 2^{63499132019421} is an apocalyptic number.

It is an amenable number.

63499132019421 is a deficient number, since it is larger than the sum of its proper divisors (48099517951779).

63499132019421 is a wasteful number, since it uses less digits than its factorization.

63499132019421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39540675 (or 39540669 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 63499132019421 in words is "sixty-three trillion, four hundred ninety-nine billion, one hundred thirty-two million, nineteen thousand, four hundred twenty-one".