63249340437 has 24 divisors (see below), whose sum is σ = 91969772544. Its totient is φ = 41885030304.

The previous prime is 63249340391. The next prime is 63249340447. The reversal of 63249340437 is 73404394236.

63249340437 is a `hidden beast` number, since 63 + 249 + 340 + 4 + 3 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-63249340437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63249340392 and 63249340401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63249340447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8337148 + ... + 8344730.

It is an arithmetic number, because the mean of its divisors is an integer number (3832073856).

Almost surely, 2^63249340437 is an apocalyptic number.

It is an amenable number.

63249340437 is a deficient number, since it is larger than the sum of its proper divisors (28720432107).

63249340437 is a wasteful number, since it uses less digits than its factorization.

63249340437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13649 (or 13646 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 45.

The spelling of 63249340437 in words is "sixty-three billion, two hundred forty-nine million, three hundred forty thousand, four hundred thirty-seven".