63403727394 has 16 divisors (see below), whose sum is σ = 144922805568. Its totient is φ = 18115350672.

The previous prime is 63403727393. The next prime is 63403727417. The reversal of 63403727394 is 49372730436.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63403727393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754806237 + ... + 754806320.

It is an arithmetic number, because the mean of its divisors is an integer number (9057675348).

Almost surely, 2^63403727394 is an apocalyptic number.

63403727394 is an abundant number, since it is smaller than the sum of its proper divisors (81519078174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63403727394 is a wasteful number, since it uses less digits than its factorization.

63403727394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509612569.

The product of its (nonzero) digits is 2286144, while the sum is 48.

The spelling of 63403727394 in words is "sixty-three billion, four hundred three million, seven hundred twenty-seven thousand, three hundred ninety-four".