102553120123511 has 4 divisors (see below), whose sum is σ = 104083763707512. Its totient is φ = 101022476539512.

The previous prime is 102553120123469. The next prime is 102553120123513. The reversal of 102553120123511 is 115321021355201.

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 102553120123511 - 2¹⁴ = 102553120107127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102553120123513) 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, 765321791900 + ... + 765321792033.

It is an arithmetic number, because the mean of its divisors is an integer number (26020940926878).

Almost surely, 2^{102553120123511} is an apocalyptic number.

102553120123511 is a deficient number, since it is larger than the sum of its proper divisors (1530643584001).

102553120123511 is an equidigital number, since it uses as much as digits as its factorization.

102553120123511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530643584000.

The product of its (nonzero) digits is 9000, while the sum is 32.

Adding to 102553120123511 its reverse (115321021355201), we get a palindrome (217874141478712).

The spelling of 102553120123511 in words is "one hundred two trillion, five hundred fifty-three billion, one hundred twenty million, one hundred twenty-three thousand, five hundred eleven".