693993781356 has 48 divisors (see below), whose sum is σ = 1625936772096. Its totient is φ = 230386192384.

The previous prime is 693993781337. The next prime is 693993781361. The reversal of 693993781356 is 653187399396.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18259885 + ... + 18297851.

It is an arithmetic number, because the mean of its divisors is an integer number (33873682752).

Almost surely, 2^693993781356 is an apocalyptic number.

It is an amenable number.

693993781356 is an abundant number, since it is smaller than the sum of its proper divisors (931942990740).

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

693993781356 is a wasteful number, since it uses less digits than its factorization.

693993781356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44158 (or 44156 counting only the distinct ones).

The product of its digits is 198404640, while the sum is 69.

The spelling of 693993781356 in words is "six hundred ninety-three billion, nine hundred ninety-three million, seven hundred eighty-one thousand, three hundred fifty-six".