68521193952 has 48 divisors (see below), whose sum is σ = 179889050880. Its totient is φ = 22837741952.

The previous prime is 68521193941. The next prime is 68521194011. The reversal of 68521193952 is 25939112586.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 68521193895 and 68521193904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898699 + ... + 971957.

It is an arithmetic number, because the mean of its divisors is an integer number (3747688560).

Almost surely, 2^68521193952 is an apocalyptic number.

It is an amenable number.

68521193952 is an abundant number, since it is smaller than the sum of its proper divisors (111367856928).

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

68521193952 is a wasteful number, since it uses less digits than its factorization.

68521193952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83015 (or 83007 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 51.

The spelling of 68521193952 in words is "sixty-eight billion, five hundred twenty-one million, one hundred ninety-three thousand, nine hundred fifty-two".