102139110551 has 4 divisors (see below), whose sum is σ = 102169093152. Its totient is φ = 102109127952.

The previous prime is 102139110533. The next prime is 102139110553. The reversal of 102139110551 is 155011931201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155011931201 = 563 ⋅275332027.

It is a cyclic number.

It is not a de Polignac number, because 102139110551 - 2⁶ = 102139110487 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 (102139110553) 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, 14986190 + ... + 14993003.

It is an arithmetic number, because the mean of its divisors is an integer number (25542273288).

Almost surely, 2^102139110551 is an apocalyptic number.

102139110551 is a deficient number, since it is larger than the sum of its proper divisors (29982601).

102139110551 is an equidigital number, since it uses as much as digits as its factorization.

102139110551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29982600.

The product of its (nonzero) digits is 1350, while the sum is 29.

The spelling of 102139110551 in words is "one hundred two billion, one hundred thirty-nine million, one hundred ten thousand, five hundred fifty-one".