2620317851 has 2 divisors, whose sum is σ = 2620317852. Its totient is φ = 2620317850.

The previous prime is 2620317839. The next prime is 2620317871. The reversal of 2620317851 is 1587130262.

It is a happy number.

2620317851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2620317851 - 2¹⁰ = 2620316827 is a prime.

It is not a weakly prime, because it can be changed into another prime (2620317871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310158925 + 1310158926.

It is an arithmetic number, because the mean of its divisors is an integer number (1310158926).

Almost surely, 2^2620317851 is an apocalyptic number.

2620317851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620317851 is an equidigital number, since it uses as much as digits as its factorization.

2620317851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2620317851 is about 51189.0403406823. The cubic root of 2620317851 is about 1378.6414290147.

The spelling of 2620317851 in words is "two billion, six hundred twenty million, three hundred seventeen thousand, eight hundred fifty-one".