30493721487 has 4 divisors (see below), whose sum is σ = 40658295320. Its totient is φ = 20329147656.

The previous prime is 30493721443. The next prime is 30493721497. The reversal of 30493721487 is 78412739403.

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

It is not a de Polignac number, because 30493721487 - 2⁷ = 30493721359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30493721417) 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 3 ways as a sum of consecutive naturals, for example, 5082286912 + ... + 5082286917.

It is an arithmetic number, because the mean of its divisors is an integer number (10164573830).

Almost surely, 2^30493721487 is an apocalyptic number.

30493721487 is a deficient number, since it is larger than the sum of its proper divisors (10164573833).

30493721487 is a wasteful number, since it uses less digits than its factorization.

30493721487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10164573832.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 30493721487 in words is "thirty billion, four hundred ninety-three million, seven hundred twenty-one thousand, four hundred eighty-seven".