91061444837376 has 1024 divisors, whose sum is σ = 302446981939200. Its totient is φ = 26888188723200.

The previous prime is 91061444837347. The next prime is 91061444837401. The reversal of 91061444837376 is 67373844416019.

It is a happy number.

91061444837376 is a `hidden beast` number, since 9 + 1 + 0 + 6 + 14 + 4 + 483 + 73 + 76 = 666.

It is a tau number, because it is divible by the number of its divisors (1024).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45281672211 + ... + 45281674221.

It is an arithmetic number, because the mean of its divisors is an integer number (295358380800).

Almost surely, 2^{91061444837376} is an apocalyptic number.

91061444837376 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91061444837376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151223490969600).

91061444837376 is an abundant number, since it is smaller than the sum of its proper divisors (211385537101824).

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

91061444837376 is a wasteful number, since it uses less digits than its factorization.

91061444837376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 91061444837376 in words is "ninety-one trillion, sixty-one billion, four hundred forty-four million, eight hundred thirty-seven thousand, three hundred seventy-six".