23020143977 has 2 divisors, whose sum is σ = 23020143978. Its totient is φ = 23020143976.

The previous prime is 23020143973. The next prime is 23020144061. The reversal of 23020143977 is 77934102032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12118487056 + 10901656921 = 110084^2 + 104411^2 .

It is a cyclic number.

It is not a de Polignac number, because 23020143977 - 2² = 23020143973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23020143977.

It is not a weakly prime, because it can be changed into another prime (23020143973) by changing a digit.

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 as a sum of consecutive naturals, namely, 11510071988 + 11510071989.

It is an arithmetic number, because the mean of its divisors is an integer number (11510071989).

Almost surely, 2^23020143977 is an apocalyptic number.

It is an amenable number.

23020143977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020143977 is an equidigital number, since it uses as much as digits as its factorization.

23020143977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 23020143977 in words is "twenty-three billion, twenty million, one hundred forty-three thousand, nine hundred seventy-seven".