99601556851 has 2 divisors, whose sum is σ = 99601556852. Its totient is φ = 99601556850.

The previous prime is 99601556807. The next prime is 99601556881. The reversal of 99601556851 is 15865510699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99601556851 - 2⁷ = 99601556723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99601556792 and 99601556801.

It is not a weakly prime, because it can be changed into another prime (99601556881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49800778425 + 49800778426.

It is an arithmetic number, because the mean of its divisors is an integer number (49800778426).

Almost surely, 2^99601556851 is an apocalyptic number.

99601556851 is a deficient number, since it is larger than the sum of its proper divisors (1).

99601556851 is an equidigital number, since it uses as much as digits as its factorization.

99601556851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916000, while the sum is 55.

The spelling of 99601556851 in words is "ninety-nine billion, six hundred one million, five hundred fifty-six thousand, eight hundred fifty-one".