68451805620 has 120 divisors (see below), whose sum is σ = 234257351328. Its totient is φ = 16594372800.

The previous prime is 68451805619. The next prime is 68451805633. The reversal of 68451805620 is 2650815486.

68451805620 is a `hidden beast` number, since 6 + 8 + 4 + 5 + 1 + 80 + 562 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 39 ways as a sum of consecutive naturals, for example, 1902826 + ... + 1938465.

Almost surely, 2^68451805620 is an apocalyptic number.

68451805620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68451805620 is an abundant number, since it is smaller than the sum of its proper divisors (165805545708).

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

68451805620 is a wasteful number, since it uses less digits than its factorization.

68451805620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841323 (or 3841312 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 68451805620 in words is "sixty-eight billion, four hundred fifty-one million, eight hundred five thousand, six hundred twenty".