13970209878 has 24 divisors (see below), whose sum is σ = 30271197216. Its totient is φ = 4656366000.

The previous prime is 13970209871. The next prime is 13970209927. The reversal of 13970209878 is 87890207931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13970209871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293808 + ... + 338028.

It is an arithmetic number, because the mean of its divisors is an integer number (1261299884).

Almost surely, 2^13970209878 is an apocalyptic number.

13970209878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13970209878 is an abundant number, since it is smaller than the sum of its proper divisors (16300987338).

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

13970209878 is a wasteful number, since it uses less digits than its factorization.

13970209878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61780 (or 61777 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 13970209878 in words is "thirteen billion, nine hundred seventy million, two hundred nine thousand, eight hundred seventy-eight".