2621039851 has 2 divisors, whose sum is σ = 2621039852. Its totient is φ = 2621039850.

The previous prime is 2621039831. The next prime is 2621039903. The reversal of 2621039851 is 1589301262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2621039851 - 2⁷ = 2621039723 is a prime.

It is a super-3 number, since 3×2621039851³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2621039851.

It is not a weakly prime, because it can be changed into another prime (2621039831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310519925 + 1310519926.

It is an arithmetic number, because the mean of its divisors is an integer number (1310519926).

Almost surely, 2^2621039851 is an apocalyptic number.

2621039851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621039851 is an equidigital number, since it uses as much as digits as its factorization.

2621039851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2621039851 is about 51196.0921457878. The cubic root of 2621039851 is about 1378.7680405889.

The spelling of 2621039851 in words is "two billion, six hundred twenty-one million, thirty-nine thousand, eight hundred fifty-one".