20768883587 has 2 divisors, whose sum is σ = 20768883588. Its totient is φ = 20768883586.

The previous prime is 20768883539. The next prime is 20768883601. The reversal of 20768883587 is 78538886702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20768883587 - 2¹⁶ = 20768818051 is a prime.

It is not a weakly prime, because it can be changed into another prime (20768883517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10384441793 + 10384441794.

It is an arithmetic number, because the mean of its divisors is an integer number (10384441794).

Almost surely, 2^20768883587 is an apocalyptic number.

20768883587 is a deficient number, since it is larger than the sum of its proper divisors (1).

20768883587 is an equidigital number, since it uses as much as digits as its factorization.

20768883587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36126720, while the sum is 62.

The spelling of 20768883587 in words is "twenty billion, seven hundred sixty-eight million, eight hundred eighty-three thousand, five hundred eighty-seven".