13475478780 has 36 divisors (see below), whose sum is σ = 40875619512. Its totient is φ = 3593460960.

The previous prime is 13475478743. The next prime is 13475478803. The reversal of 13475478780 is 8787457431.

13475478780 is a `hidden beast` number, since 1 + 34 + 75 + 478 + 78 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37431706 + ... + 37432065.

Almost surely, 2^13475478780 is an apocalyptic number.

13475478780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13475478780 is an abundant number, since it is smaller than the sum of its proper divisors (27400140732).

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

13475478780 is a wasteful number, since it uses less digits than its factorization.

13475478780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74863786 (or 74863781 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 13475478780 in words is "thirteen billion, four hundred seventy-five million, four hundred seventy-eight thousand, seven hundred eighty".