30889378768 has 40 divisors (see below), whose sum is σ = 62836022880. Its totient is φ = 14689530240.

The previous prime is 30889378717. The next prime is 30889378789. The reversal of 30889378768 is 86787398803.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465718 + ... + 527893.

It is an arithmetic number, because the mean of its divisors is an integer number (1570900572).

Almost surely, 2^30889378768 is an apocalyptic number.

It is an amenable number.

30889378768 is an abundant number, since it is smaller than the sum of its proper divisors (31946644112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30889378768 is a wasteful number, since it uses less digits than its factorization.

30889378768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993715 (or 993709 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 67.

The spelling of 30889378768 in words is "thirty billion, eight hundred eighty-nine million, three hundred seventy-eight thousand, seven hundred sixty-eight".