30851855540 has 48 divisors (see below), whose sum is σ = 70987553280. Its totient is φ = 11169847680.

The previous prime is 30851855539. The next prime is 30851855569. The reversal of 30851855540 is 4555815803.

It is a super-2 number, since 2×30851855540² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 30851855491 and 30851855500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255812 + ... + 356571.

It is an arithmetic number, because the mean of its divisors is an integer number (1478907360).

Almost surely, 2^30851855540 is an apocalyptic number.

It is an amenable number.

30851855540 is an abundant number, since it is smaller than the sum of its proper divisors (40135697740).

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

30851855540 is a wasteful number, since it uses less digits than its factorization.

30851855540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612632 (or 612630 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 44.

The spelling of 30851855540 in words is "thirty billion, eight hundred fifty-one million, eight hundred fifty-five thousand, five hundred forty".