63193781940 has 24 divisors (see below), whose sum is σ = 176942589600. Its totient is φ = 16851675168.

The previous prime is 63193781939. The next prime is 63193781993. The reversal of 63193781940 is 4918739136.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 526614790 + ... + 526614909.

It is an arithmetic number, because the mean of its divisors is an integer number (7372607900).

Almost surely, 2^63193781940 is an apocalyptic number.

63193781940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63193781940 is an abundant number, since it is smaller than the sum of its proper divisors (113748807660).

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

63193781940 is a wasteful number, since it uses less digits than its factorization.

63193781940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053229711 (or 1053229709 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 63193781940 in words is "sixty-three billion, one hundred ninety-three million, seven hundred eighty-one thousand, nine hundred forty".