30685476780 has 288 divisors, whose sum is σ = 113152697280. Its totient is φ = 6881172480.

The previous prime is 30685476769. The next prime is 30685476827. The reversal of 30685476780 is 8767458603.

30685476780 is a `hidden beast` number, since 30 + 6 + 8 + 547 + 67 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1391440 + ... + 1413320.

It is an arithmetic number, because the mean of its divisors is an integer number (392891310).

Almost surely, 2^30685476780 is an apocalyptic number.

30685476780 is a gapful number since it is divisible by the number (30) 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 30685476780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56576348640).

30685476780 is an abundant number, since it is smaller than the sum of its proper divisors (82467220500).

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

30685476780 is a wasteful number, since it uses less digits than its factorization.

30685476780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21966 (or 21951 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 30685476780 in words is "thirty billion, six hundred eighty-five million, four hundred seventy-six thousand, seven hundred eighty".