68231001780 has 96 divisors (see below), whose sum is σ = 224760977280. Its totient is φ = 17124641280.

The previous prime is 68231001697. The next prime is 68231001803. The reversal of 68231001780 is 8710013286.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3707106 + ... + 3725465.

It is an arithmetic number, because the mean of its divisors is an integer number (2341260180).

Almost surely, 2^68231001780 is an apocalyptic number.

68231001780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68231001780 is an abundant number, since it is smaller than the sum of its proper divisors (156529975500).

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

68231001780 is a wasteful number, since it uses less digits than its factorization.

68231001780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7432606 (or 7432598 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 68231001780 in words is "sixty-eight billion, two hundred thirty-one million, one thousand, seven hundred eighty".