13025793978 has 16 divisors (see below), whose sum is σ = 28946208960. Its totient is φ = 4341931308.

The previous prime is 13025793959. The next prime is 13025794003. The reversal of 13025793978 is 87939752031.

13025793978 is a `hidden beast` number, since 1 + 30 + 2 + 579 + 39 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 241218407 = 13025793978 / (1 + 3 + 0 + 2 + 5 + 7 + 9 + 3 + 9 + 7 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120609150 + ... + 120609257.

It is an arithmetic number, because the mean of its divisors is an integer number (1809138060).

Almost surely, 2^13025793978 is an apocalyptic number.

13025793978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13025793978 is an abundant number, since it is smaller than the sum of its proper divisors (15920414982).

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

13025793978 is a wasteful number, since it uses less digits than its factorization.

13025793978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241218418 (or 241218412 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 13025793978 in words is "thirteen billion, twenty-five million, seven hundred ninety-three thousand, nine hundred seventy-eight".