15977947934 has 8 divisors (see below), whose sum is σ = 25810531320. Its totient is φ = 7374437496.

The previous prime is 15977947907. The next prime is 15977947939. The reversal of 15977947934 is 43974977951.

15977947934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×15977947934² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15977947939) 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, 307268204 + ... + 307268255.

It is an arithmetic number, because the mean of its divisors is an integer number (3226316415).

Almost surely, 2^15977947934 is an apocalyptic number.

15977947934 is a deficient number, since it is larger than the sum of its proper divisors (9832583386).

15977947934 is a wasteful number, since it uses less digits than its factorization.

15977947934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614536474.

The product of its digits is 60011280, while the sum is 65.

The spelling of 15977947934 in words is "fifteen billion, nine hundred seventy-seven million, nine hundred forty-seven thousand, nine hundred thirty-four".