102492355840 has 144 divisors (see below), whose sum is σ = 282459542400. Its totient is φ = 34903941120.

The previous prime is 102492355831. The next prime is 102492355841. The reversal of 102492355840 is 48553294201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102492355841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296655 + ... + 1373425.

It is an arithmetic number, because the mean of its divisors is an integer number (1961524600).

Almost surely, 2^102492355840 is an apocalyptic number.

102492355840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102492355840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141229771200).

102492355840 is an abundant number, since it is smaller than the sum of its proper divisors (179967186560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102492355840 is an equidigital number, since it uses as much as digits as its factorization.

102492355840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76948 (or 76934 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 102492355840 in words is "one hundred two billion, four hundred ninety-two million, three hundred fifty-five thousand, eight hundred forty".