30851855542 has 4 divisors (see below), whose sum is σ = 46277783316. Its totient is φ = 15425927770.

The previous prime is 30851855539. The next prime is 30851855569. The reversal of 30851855542 is 24555815803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24555815803 = 433 ⋅56710891.

It is a super-2 number, since 2×30851855542² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30851855492 and 30851855501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7712963884 + ... + 7712963887.

It is an arithmetic number, because the mean of its divisors is an integer number (11569445829).

Almost surely, 2^30851855542 is an apocalyptic number.

30851855542 is a deficient number, since it is larger than the sum of its proper divisors (15425927774).

30851855542 is a wasteful number, since it uses less digits than its factorization.

30851855542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15425927773.

The product of its (nonzero) digits is 960000, while the sum is 46.

The spelling of 30851855542 in words is "thirty billion, eight hundred fifty-one million, eight hundred fifty-five thousand, five hundred forty-two".