28177755007 has 2 divisors, whose sum is σ = 28177755008. Its totient is φ = 28177755006.

The previous prime is 28177754993. The next prime is 28177755013. The reversal of 28177755007 is 70055777182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28177755007 - 2¹⁵ = 28177722239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28177755097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14088877503 + 14088877504.

It is an arithmetic number, because the mean of its divisors is an integer number (14088877504).

Almost surely, 2^28177755007 is an apocalyptic number.

28177755007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28177755007 is an equidigital number, since it uses as much as digits as its factorization.

28177755007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960400, while the sum is 49.

The spelling of 28177755007 in words is "twenty-eight billion, one hundred seventy-seven million, seven hundred fifty-five thousand, seven".