30767086780 has 24 divisors (see below), whose sum is σ = 64616706000. Its totient is φ = 12305725440.

The previous prime is 30767086751. The next prime is 30767086781. The reversal of 30767086780 is 8768076703.

It is a happy number.

It is a super-2 number, since 2×30767086780² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30767086781) 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, 179971 + ... + 306469.

It is an arithmetic number, because the mean of its divisors is an integer number (2692362750).

Almost surely, 2^30767086780 is an apocalyptic number.

It is an amenable number.

30767086780 is an abundant number, since it is smaller than the sum of its proper divisors (33849619220).

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

30767086780 is a wasteful number, since it uses less digits than its factorization.

30767086780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138669 (or 138667 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 30767086780 in words is "thirty billion, seven hundred sixty-seven million, eighty-six thousand, seven hundred eighty".