30781888074 has 48 divisors (see below), whose sum is σ = 76413936768. Its totient is φ = 8772657696.

The previous prime is 30781888021. The next prime is 30781888099. The reversal of 30781888074 is 47088818703.

It is a self number, because there is not a number n which added to its sum of digits gives 30781888074.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257662 + ... + 357705.

It is an arithmetic number, because the mean of its divisors is an integer number (1591957016).

Almost surely, 2^30781888074 is an apocalyptic number.

30781888074 is an abundant number, since it is smaller than the sum of its proper divisors (45632048694).

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

30781888074 is a wasteful number, since it uses less digits than its factorization.

30781888074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615779 (or 615776 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 54.

The spelling of 30781888074 in words is "thirty billion, seven hundred eighty-one million, eight hundred eighty-eight thousand, seventy-four".