28880011507 has 2 divisors, whose sum is σ = 28880011508. Its totient is φ = 28880011506.

The previous prime is 28880011477. The next prime is 28880011529. The reversal of 28880011507 is 70511008882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28880011507 - 2⁷ = 28880011379 is a prime.

It is a super-2 number, since 2×28880011507² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28880011507.

It is not a weakly prime, because it can be changed into another prime (28880011007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14440005753 + 14440005754.

It is an arithmetic number, because the mean of its divisors is an integer number (14440005754).

Almost surely, 2^28880011507 is an apocalyptic number.

28880011507 is a deficient number, since it is larger than the sum of its proper divisors (1).

28880011507 is an equidigital number, since it uses as much as digits as its factorization.

28880011507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 40.

The spelling of 28880011507 in words is "twenty-eight billion, eight hundred eighty million, eleven thousand, five hundred seven".