2520641399 has 2 divisors, whose sum is σ = 2520641400. Its totient is φ = 2520641398.

The previous prime is 2520641353. The next prime is 2520641423. The reversal of 2520641399 is 9931460252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2520641399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520643399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260320699 + 1260320700.

It is an arithmetic number, because the mean of its divisors is an integer number (1260320700).

Almost surely, 2^2520641399 is an apocalyptic number.

2520641399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520641399 is an equidigital number, since it uses as much as digits as its factorization.

2520641399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 2520641399 is about 50205.9896725480. The cubic root of 2520641399 is about 1360.9338667799.

The spelling of 2520641399 in words is "two billion, five hundred twenty million, six hundred forty-one thousand, three hundred ninety-nine".