102108858541 has 4 divisors (see below), whose sum is σ = 102109501692. Its totient is φ = 102108215392.

The previous prime is 102108858517. The next prime is 102108858583. The reversal of 102108858541 is 145858801201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 77656968900 + 24451889641 = 278670^2 + 156371^2 .

It is a cyclic number.

It is not a de Polignac number, because 102108858541 - 2⁷ = 102108858413 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 (102108858641) 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, 106671 + ... + 464323.

It is an arithmetic number, because the mean of its divisors is an integer number (25527375423).

Almost surely, 2^102108858541 is an apocalyptic number.

It is an amenable number.

102108858541 is a deficient number, since it is larger than the sum of its proper divisors (643151).

102108858541 is an equidigital number, since it uses as much as digits as its factorization.

102108858541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643150.

The product of its (nonzero) digits is 102400, while the sum is 43.

The spelling of 102108858541 in words is "one hundred two billion, one hundred eight million, eight hundred fifty-eight thousand, five hundred forty-one".