2054406367639 has 2 divisors, whose sum is σ = 2054406367640. Its totient is φ = 2054406367638.

The previous prime is 2054406367627. The next prime is 2054406367757. The reversal of 2054406367639 is 9367636044502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2054406367639 - 2⁹ = 2054406367127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2054406367639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2054406362639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027203183819 + 1027203183820.

It is an arithmetic number, because the mean of its divisors is an integer number (1027203183820).

Almost surely, 2^{2054406367639} is an apocalyptic number.

2054406367639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054406367639 is an equidigital number, since it uses as much as digits as its factorization.

2054406367639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19595520, while the sum is 55.

The spelling of 2054406367639 in words is "two trillion, fifty-four billion, four hundred six million, three hundred sixty-seven thousand, six hundred thirty-nine".