30805329561 has 8 divisors (see below), whose sum is σ = 41087389920. Its totient is φ = 20530077792.

The previous prime is 30805329523. The next prime is 30805329593. The reversal of 30805329561 is 16592350803.

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

It is not a de Polignac number, because 30805329561 - 2²³ = 30796940953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30805329661) 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, 1691580 + ... + 1709693.

It is an arithmetic number, because the mean of its divisors is an integer number (5135923740).

Almost surely, 2^30805329561 is an apocalyptic number.

It is an amenable number.

30805329561 is a deficient number, since it is larger than the sum of its proper divisors (10282060359).

30805329561 is a wasteful number, since it uses less digits than its factorization.

30805329561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404295.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 30805329561 in words is "thirty billion, eight hundred five million, three hundred twenty-nine thousand, five hundred sixty-one".