30678123897 has 8 divisors (see below), whose sum is σ = 45449072480. Its totient is φ = 20452082580.

The previous prime is 30678123811. The next prime is 30678123911. The reversal of 30678123897 is 79832187603.

It is not a de Polignac number, because 30678123897 - 2¹⁴ = 30678107513 is a prime.

It is a super-2 number, since 2×30678123897² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30678123397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568113379 + ... + 568113432.

It is an arithmetic number, because the mean of its divisors is an integer number (5681134060).

Almost surely, 2^30678123897 is an apocalyptic number.

It is an amenable number.

30678123897 is a deficient number, since it is larger than the sum of its proper divisors (14770948583).

30678123897 is a wasteful number, since it uses less digits than its factorization.

30678123897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136226820 (or 1136226814 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 30678123897 in words is "thirty billion, six hundred seventy-eight million, one hundred twenty-three thousand, eight hundred ninety-seven".