102145543000 has 64 divisors (see below), whose sum is σ = 239299557120. Its totient is φ = 40810528000.

The previous prime is 102145542943. The next prime is 102145543007. The reversal of 102145543000 is 345541201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102145543007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803820 + ... + 922180.

It is an arithmetic number, because the mean of its divisors is an integer number (3739055580).

Almost surely, 2^102145543000 is an apocalyptic number.

102145543000 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 102145543000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119649778560).

102145543000 is an abundant number, since it is smaller than the sum of its proper divisors (137154014120).

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

102145543000 is a wasteful number, since it uses less digits than its factorization.

102145543000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119245 (or 119231 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 102145543000 in words is "one hundred two billion, one hundred forty-five million, five hundred forty-three thousand".