102455144999 has 4 divisors (see below), whose sum is σ = 102601301400. Its totient is φ = 102308988600.

The previous prime is 102455144989. The next prime is 102455145019. The reversal of 102455144999 is 999441554201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999441554201 = 29 ⋅34463501869.

It is a cyclic number.

It is not a de Polignac number, because 102455144999 - 2²⁸ = 102186709543 is a prime.

It is a super-2 number, since 2×102455144999² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102455144999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102455144959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73077149 + ... + 73078550.

It is an arithmetic number, because the mean of its divisors is an integer number (25650325350).

Almost surely, 2^102455144999 is an apocalyptic number.

102455144999 is a deficient number, since it is larger than the sum of its proper divisors (146156401).

102455144999 is an equidigital number, since it uses as much as digits as its factorization.

102455144999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146156400.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 102455144999 in words is "one hundred two billion, four hundred fifty-five million, one hundred forty-four thousand, nine hundred ninety-nine".