30681579494 has 16 divisors (see below), whose sum is σ = 46095065280. Its totient is φ = 15316579200.

The previous prime is 30681579473. The next prime is 30681579499. The reversal of 30681579494 is 49497518603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30681579499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3870467 + ... + 3878385.

It is an arithmetic number, because the mean of its divisors is an integer number (2880941580).

Almost surely, 2^30681579494 is an apocalyptic number.

30681579494 is a deficient number, since it is larger than the sum of its proper divisors (15413485786).

30681579494 is a wasteful number, since it uses less digits than its factorization.

30681579494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10735.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 30681579494 in words is "thirty billion, six hundred eighty-one million, five hundred seventy-nine thousand, four hundred ninety-four".