30855043487 has 4 divisors (see below), whose sum is σ = 31154607120. Its totient is φ = 30555479856.

The previous prime is 30855043481. The next prime is 30855043507. The reversal of 30855043487 is 78434055803.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30855043487 - 2²⁶ = 30787934623 is a prime.

It is a super-2 number, since 2×30855043487² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30855043481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149781662 + ... + 149781867.

It is an arithmetic number, because the mean of its divisors is an integer number (7788651780).

Almost surely, 2^30855043487 is an apocalyptic number.

30855043487 is a deficient number, since it is larger than the sum of its proper divisors (299563633).

30855043487 is a wasteful number, since it uses less digits than its factorization.

30855043487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299563632.

The product of its (nonzero) digits is 1612800, while the sum is 47.

The spelling of 30855043487 in words is "thirty billion, eight hundred fifty-five million, forty-three thousand, four hundred eighty-seven".