891725309514 has 48 divisors (see below), whose sum is σ = 2087470056672. Its totient is φ = 273483260064.

The previous prime is 891725309509. The next prime is 891725309521. The reversal of 891725309514 is 415903527198.

It is a happy number.

891725309514 is a `hidden beast` number, since 8 + 9 + 1 + 7 + 2 + 530 + 95 + 14 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6134664 + ... + 6278339.

It is an arithmetic number, because the mean of its divisors is an integer number (43488959514).

Almost surely, 2^891725309514 is an apocalyptic number.

891725309514 is an abundant number, since it is smaller than the sum of its proper divisors (1195744747158).

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

891725309514 is a wasteful number, since it uses less digits than its factorization.

891725309514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12413331 (or 12413328 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 891725309514 in words is "eight hundred ninety-one billion, seven hundred twenty-five million, three hundred nine thousand, five hundred fourteen".