23780272387 has 2 divisors, whose sum is σ = 23780272388. Its totient is φ = 23780272386.

The previous prime is 23780272381. The next prime is 23780272403. The reversal of 23780272387 is 78327208732.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23780272387 - 2¹⁵ = 23780239619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23780272387.

It is not a weakly prime, because it can be changed into another prime (23780272381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11890136193 + 11890136194.

It is an arithmetic number, because the mean of its divisors is an integer number (11890136194).

Almost surely, 2^23780272387 is an apocalyptic number.

23780272387 is a deficient number, since it is larger than the sum of its proper divisors (1).

23780272387 is an equidigital number, since it uses as much as digits as its factorization.

23780272387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 23780272387 in words is "twenty-three billion, seven hundred eighty million, two hundred seventy-two thousand, three hundred eighty-seven".