30095474778 has 64 divisors (see below), whose sum is σ = 67935974400. Its totient is φ = 9874275840.

The previous prime is 30095474771. The next prime is 30095474789. The reversal of 30095474778 is 87747459003.

It is a super-2 number, since 2×30095474778² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30095474771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1057698 + ... + 1085778.

It is an arithmetic number, because the mean of its divisors is an integer number (1061499600).

Almost surely, 2^30095474778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30095474778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33967987200).

30095474778 is an abundant number, since it is smaller than the sum of its proper divisors (37840499622).

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

30095474778 is a wasteful number, since it uses less digits than its factorization.

30095474778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28404 (or 28398 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 30095474778 in words is "thirty billion, ninety-five million, four hundred seventy-four thousand, seven hundred seventy-eight".