102330309978 has 96 divisors (see below), whose sum is σ = 240400742400. Its totient is φ = 31272048000.

The previous prime is 102330309973. The next prime is 102330309989. The reversal of 102330309978 is 879903033201.

102330309978 is a `hidden beast` number, since 1 + 0 + 2 + 330 + 309 + 9 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (102330309973) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22492848 + ... + 22497396.

It is an arithmetic number, because the mean of its divisors is an integer number (2504174400).

Almost surely, 2^102330309978 is an apocalyptic number.

102330309978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102330309978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120200371200).

102330309978 is an abundant number, since it is smaller than the sum of its proper divisors (138070432422).

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

102330309978 is a wasteful number, since it uses less digits than its factorization.

102330309978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204 (or 5201 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 102330309978 in words is "one hundred two billion, three hundred thirty million, three hundred nine thousand, nine hundred seventy-eight".