30897221877 has 8 divisors (see below), whose sum is σ = 45773662080. Its totient is φ = 20598147900.

The previous prime is 30897221837. The next prime is 30897221921. The reversal of 30897221877 is 77812279803.

It is not a de Polignac number, because 30897221877 - 2¹² = 30897217781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30897221837) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 572170749 + ... + 572170802.

It is an arithmetic number, because the mean of its divisors is an integer number (5721707760).

Almost surely, 2^30897221877 is an apocalyptic number.

It is an amenable number.

30897221877 is a deficient number, since it is larger than the sum of its proper divisors (14876440203).

30897221877 is a wasteful number, since it uses less digits than its factorization.

30897221877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144341560 (or 1144341554 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 30897221877 in words is "thirty billion, eight hundred ninety-seven million, two hundred twenty-one thousand, eight hundred seventy-seven".