20077234543901 has 2 divisors, whose sum is σ = 20077234543902. Its totient is φ = 20077234543900.

The previous prime is 20077234543823. The next prime is 20077234543931. The reversal of 20077234543901 is 10934543277002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19833430668676 + 243803875225 = 4453474^2 + 493765^2 .

It is a cyclic number.

It is not a de Polignac number, because 20077234543901 - 2⁴² = 15679188032797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20077234543931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10038617271950 + 10038617271951.

It is an arithmetic number, because the mean of its divisors is an integer number (10038617271951).

Almost surely, 2^{20077234543901} is an apocalyptic number.

It is an amenable number.

20077234543901 is a deficient number, since it is larger than the sum of its proper divisors (1).

20077234543901 is an equidigital number, since it uses as much as digits as its factorization.

20077234543901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 20077234543901 in words is "twenty trillion, seventy-seven billion, two hundred thirty-four million, five hundred forty-three thousand, nine hundred one".