102155655499 has 2 divisors, whose sum is σ = 102155655500. Its totient is φ = 102155655498.

The previous prime is 102155655463. The next prime is 102155655523. The reversal of 102155655499 is 994556551201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102155655499 - 2⁹ = 102155654987 is a prime.

It is not a weakly prime, because it can be changed into another prime (102155655409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51077827749 + 51077827750.

It is an arithmetic number, because the mean of its divisors is an integer number (51077827750).

Almost surely, 2^102155655499 is an apocalyptic number.

102155655499 is a deficient number, since it is larger than the sum of its proper divisors (1).

102155655499 is an equidigital number, since it uses as much as digits as its factorization.

102155655499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430000, while the sum is 52.

The spelling of 102155655499 in words is "one hundred two billion, one hundred fifty-five million, six hundred fifty-five thousand, four hundred ninety-nine".