24787992871 has 2 divisors, whose sum is σ = 24787992872. Its totient is φ = 24787992870.

The previous prime is 24787992821. The next prime is 24787992877. The reversal of 24787992871 is 17829978742.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24787992871 is a prime.

It is a super-4 number, since 4×24787992871⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24787992877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12393996435 + 12393996436.

It is an arithmetic number, because the mean of its divisors is an integer number (12393996436).

Almost surely, 2^24787992871 is an apocalyptic number.

24787992871 is a deficient number, since it is larger than the sum of its proper divisors (1).

24787992871 is an equidigital number, since it uses as much as digits as its factorization.

24787992871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28449792, while the sum is 64.

The spelling of 24787992871 in words is "twenty-four billion, seven hundred eighty-seven million, nine hundred ninety-two thousand, eight hundred seventy-one".