30640721892482 has 32 divisors (see below), whose sum is σ = 49967087330160. Its totient is φ = 14007518023680.

The previous prime is 30640721892461. The next prime is 30640721892503. The reversal of 30640721892482 is 28429812704603.

It is an interprime number because it is at equal distance from previous prime (30640721892461) and next prime (30640721892503).

It can be written as a sum of positive squares in 8 ways, for example, as 22242080254801 + 8398641637681 = 4716151^2 + 2898041^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6840518 + ... + 10395870.

Almost surely, 2^{30640721892482} is an apocalyptic number.

30640721892482 is a deficient number, since it is larger than the sum of its proper divisors (19326365437678).

30640721892482 is a wasteful number, since it uses less digits than its factorization.

30640721892482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558518.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 30640721892482 in words is "thirty trillion, six hundred forty billion, seven hundred twenty-one million, eight hundred ninety-two thousand, four hundred eighty-two".