20000061000023 has 4 divisors (see below), whose sum is σ = 21538527230808. Its totient is φ = 18461594769240.

The previous prime is 20000060999951. The next prime is 20000061000047. The reversal of 20000061000023 is 32000016000002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000061000023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000060999971 and 20000061000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000061000323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769233115373 + ... + 769233115398.

It is an arithmetic number, because the mean of its divisors is an integer number (5384631807702).

Almost surely, 2^{20000061000023} is an apocalyptic number.

20000061000023 is a deficient number, since it is larger than the sum of its proper divisors (1538466230785).

20000061000023 is a wasteful number, since it uses less digits than its factorization.

20000061000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538466230784.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20000061000023 its reverse (32000016000002), we get a palindrome (52000077000025).

The spelling of 20000061000023 in words is "twenty trillion, sixty-one million, twenty-three", and thus it is an aban number and an uban number.