2521623542377 has 2 divisors, whose sum is σ = 2521623542378. Its totient is φ = 2521623542376.

The previous prime is 2521623542363. The next prime is 2521623542401. The reversal of 2521623542377 is 7732453261252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1607479122496 + 914144419881 = 1267864^2 + 956109^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521623542377 - 2²³ = 2521615153769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2521623542377.

It is not a weakly prime, because it can be changed into another prime (2521623542327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260811771188 + 1260811771189.

It is an arithmetic number, because the mean of its divisors is an integer number (1260811771189).

Almost surely, 2^{2521623542377} is an apocalyptic number.

It is an amenable number.

2521623542377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521623542377 is an equidigital number, since it uses as much as digits as its factorization.

2521623542377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 49.

The spelling of 2521623542377 in words is "two trillion, five hundred twenty-one billion, six hundred twenty-three million, five hundred forty-two thousand, three hundred seventy-seven".