2620020555391 has 2 divisors, whose sum is σ = 2620020555392. Its totient is φ = 2620020555390.

The previous prime is 2620020555371. The next prime is 2620020555407. The reversal of 2620020555391 is 1935550200262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2620020555391 - 2¹⁷ = 2620020424319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2620020555371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310010277695 + 1310010277696.

It is an arithmetic number, because the mean of its divisors is an integer number (1310010277696).

Almost surely, 2^{2620020555391} is an apocalyptic number.

2620020555391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620020555391 is an equidigital number, since it uses as much as digits as its factorization.

2620020555391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 2620020555391 in words is "two trillion, six hundred twenty billion, twenty million, five hundred fifty-five thousand, three hundred ninety-one".