67780623900 has 144 divisors (see below), whose sum is σ = 215626199040. Its totient is φ = 16302182400.

The previous prime is 67780623877. The next prime is 67780623913. The reversal of 67780623900 is 932608776.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 67780623900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 338236 + ... + 499964.

It is an arithmetic number, because the mean of its divisors is an integer number (1497404160).

Almost surely, 2^67780623900 is an apocalyptic number.

67780623900 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67780623900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107813099520).

67780623900 is an abundant number, since it is smaller than the sum of its proper divisors (147845575140).

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

67780623900 is a wasteful number, since it uses less digits than its factorization.

67780623900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161884 (or 161877 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 67780623900 in words is "sixty-seven billion, seven hundred eighty million, six hundred twenty-three thousand, nine hundred".