13292729856 has 240 divisors, whose sum is σ = 45471089664. Its totient is φ = 3797673984.

The previous prime is 13292729839. The next prime is 13292729869. The reversal of 13292729856 is 65892729231.

13292729856 is a `hidden beast` number, since 1 + 329 + 27 + 298 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 863281 + ... + 878543.

Almost surely, 2^13292729856 is an apocalyptic number.

13292729856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13292729856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22735544832).

13292729856 is an abundant number, since it is smaller than the sum of its proper divisors (32178359808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13292729856 is an frugal number, since it uses more digits than its factorization.

13292729856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15303 (or 15275 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 13292729856 in words is "thirteen billion, two hundred ninety-two million, seven hundred twenty-nine thousand, eight hundred fifty-six".