30705170140 has 24 divisors (see below), whose sum is σ = 64484148960. Its totient is φ = 12281441088.

The previous prime is 30705170117. The next prime is 30705170161. The reversal of 30705170140 is 4107150703.

It is a junction number, because it is equal to n+sod(n) for n = 30705170099 and 30705170108.

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, 753201 + ... + 792919.

It is an arithmetic number, because the mean of its divisors is an integer number (2686839540).

Almost surely, 2^30705170140 is an apocalyptic number.

It is an amenable number.

30705170140 is an abundant number, since it is smaller than the sum of its proper divisors (33778978820).

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

30705170140 is a wasteful number, since it uses less digits than its factorization.

30705170140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78381 (or 78379 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The spelling of 30705170140 in words is "thirty billion, seven hundred five million, one hundred seventy thousand, one hundred forty".