891374737068 has 36 divisors (see below), whose sum is σ = 2253897948120. Its totient is φ = 297032512896.

The previous prime is 891374737061. The next prime is 891374737081. The reversal of 891374737068 is 860737473198.

891374737068 is a `hidden beast` number, since 8 + 9 + 1 + 37 + 473 + 70 + 68 = 666.

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

It is a super-2 number, since 2×891374737068² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 891374736996 and 891374737014.

It is not an unprimeable number, because it can be changed into a prime (891374737061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3732558 + ... + 3964181.

Almost surely, 2^891374737068 is an apocalyptic number.

It is an amenable number.

891374737068 is an abundant number, since it is smaller than the sum of its proper divisors (1362523211052).

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

891374737068 is a wasteful number, since it uses less digits than its factorization.

891374737068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699966 (or 7699961 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 891374737068 in words is "eight hundred ninety-one billion, three hundred seventy-four million, seven hundred thirty-seven thousand, sixty-eight".