30861378093 has 32 divisors (see below), whose sum is σ = 50665947136. Its totient is φ = 16271575488.

The previous prime is 30861378029. The next prime is 30861378101. The reversal of 30861378093 is 39087316803.

It is not a de Polignac number, because 30861378093 - 2⁶ = 30861378029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30861178093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650580 + ... + 696402.

It is an arithmetic number, because the mean of its divisors is an integer number (1583310848).

Almost surely, 2^30861378093 is an apocalyptic number.

It is an amenable number.

30861378093 is a deficient number, since it is larger than the sum of its proper divisors (19804569043).

30861378093 is a wasteful number, since it uses less digits than its factorization.

30861378093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48313.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 30861378093 in words is "thirty billion, eight hundred sixty-one million, three hundred seventy-eight thousand, ninety-three".