30685222257 has 8 divisors (see below), whose sum is σ = 40928923776. Its totient is φ = 20449167792.

The previous prime is 30685222229. The next prime is 30685222273. The reversal of 30685222257 is 75222258603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30685222257 - 2¹⁵ = 30685189489 is a prime.

It is a super-2 number, since 2×30685222257² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30685222297) 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, 1902393 + ... + 1918454.

It is an arithmetic number, because the mean of its divisors is an integer number (5116115472).

Almost surely, 2^30685222257 is an apocalyptic number.

It is an amenable number.

30685222257 is a deficient number, since it is larger than the sum of its proper divisors (10243701519).

30685222257 is a wasteful number, since it uses less digits than its factorization.

30685222257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823527.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 30685222257 in words is "thirty billion, six hundred eighty-five million, two hundred twenty-two thousand, two hundred fifty-seven".