68820132501 has 12 divisors (see below), whose sum is σ = 100040024812. Its totient is φ = 45587857536.

The previous prime is 68820132487. The next prime is 68820132523. The reversal of 68820132501 is 10523102886.

It is a happy number.

68820132501 is a `hidden beast` number, since 68 + 82 + 0 + 13 + 2 + 501 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51343028100 + 17477104401 = 226590^2 + 132201^2 .

It is not a de Polignac number, because 68820132501 - 2⁷ = 68820132373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68820132001) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24351076 + ... + 24353901.

Almost surely, 2^68820132501 is an apocalyptic number.

It is an amenable number.

68820132501 is a deficient number, since it is larger than the sum of its proper divisors (31219892311).

68820132501 is a wasteful number, since it uses less digits than its factorization.

68820132501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48705140 (or 48705137 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 68820132501 in words is "sixty-eight billion, eight hundred twenty million, one hundred thirty-two thousand, five hundred one".