102152054523551 has 4 divisors (see below), whose sum is σ = 106593448198512. Its totient is φ = 97710660848592.

The previous prime is 102152054523539. The next prime is 102152054523593. The reversal of 102152054523551 is 155325450251201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102152054523551 - 2⁶ = 102152054523487 is a prime.

It is a super-2 number, since 2×102152054523551² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102152054523499 and 102152054523508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102152054523511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2220696837446 + ... + 2220696837491.

It is an arithmetic number, because the mean of its divisors is an integer number (26648362049628).

Almost surely, 2^{102152054523551} is an apocalyptic number.

102152054523551 is a deficient number, since it is larger than the sum of its proper divisors (4441393674961).

102152054523551 is an equidigital number, since it uses as much as digits as its factorization.

102152054523551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441393674960.

The product of its (nonzero) digits is 300000, while the sum is 41.

The spelling of 102152054523551 in words is "one hundred two trillion, one hundred fifty-two billion, fifty-four million, five hundred twenty-three thousand, five hundred fifty-one".