201056506639 has 2 divisors, whose sum is σ = 201056506640. Its totient is φ = 201056506638.

The previous prime is 201056506603. The next prime is 201056506723. The reversal of 201056506639 is 936605650102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201056506639 - 2⁹ = 201056506127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201056506595 and 201056506604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201056506439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100528253319 + 100528253320.

It is an arithmetic number, because the mean of its divisors is an integer number (100528253320).

Almost surely, 2^201056506639 is an apocalyptic number.

201056506639 is a deficient number, since it is larger than the sum of its proper divisors (1).

201056506639 is an equidigital number, since it uses as much as digits as its factorization.

201056506639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 201056506639 in words is "two hundred one billion, fifty-six million, five hundred six thousand, six hundred thirty-nine".