15782997848 has 8 divisors (see below), whose sum is σ = 29593120980. Its totient is φ = 7891498920.

The previous prime is 15782997817. The next prime is 15782997859. The reversal of 15782997848 is 84879928751.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×15782997848² (a number of 21 digits) contains 22 as substring.

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, 986437358 + ... + 986437373.

Almost surely, 2^15782997848 is an apocalyptic number.

It is an amenable number.

15782997848 is a deficient number, since it is larger than the sum of its proper divisors (13810123132).

15782997848 is a wasteful number, since it uses less digits than its factorization.

15782997848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972874737 (or 1972874733 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 68.

The spelling of 15782997848 in words is "fifteen billion, seven hundred eighty-two million, nine hundred ninety-seven thousand, eight hundred forty-eight".