102020252590 has 16 divisors (see below), whose sum is σ = 189560211840. Its totient is φ = 39491710560.

The previous prime is 102020252549. The next prime is 102020252591. The reversal of 102020252590 is 95252020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020252591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164548485 + ... + 164549104.

It is an arithmetic number, because the mean of its divisors is an integer number (11847513240).

Almost surely, 2^102020252590 is an apocalyptic number.

102020252590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102020252590 is a deficient number, since it is larger than the sum of its proper divisors (87539959250).

102020252590 is a wasteful number, since it uses less digits than its factorization.

102020252590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329097627.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 102020252590 its reverse (95252020201), we get a palindrome (197272272791).

The spelling of 102020252590 in words is "one hundred two billion, twenty million, two hundred fifty-two thousand, five hundred ninety".