91436061276720 has 240 divisors, whose sum is σ = 310514213318400. Its totient is φ = 24111081792000.

The previous prime is 91436061276701. The next prime is 91436061276733. The reversal of 91436061276720 is 2767216063419.

91436061276720 is a `hidden beast` number, since 9 + 1 + 4 + 3 + 606 + 1 + 2 + 7 + 6 + 7 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23300101 + ... + 26940059.

It is an arithmetic number, because the mean of its divisors is an integer number (1293809222160).

Almost surely, 2^{91436061276720} is an apocalyptic number.

91436061276720 is a gapful number since it is divisible by the number (90) 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 91436061276720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155257106659200).

91436061276720 is an abundant number, since it is smaller than the sum of its proper divisors (219078152041680).

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

91436061276720 is a wasteful number, since it uses less digits than its factorization.

91436061276720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640368 (or 3640359 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 91436061276720 in words is "ninety-one trillion, four hundred thirty-six billion, sixty-one million, two hundred seventy-six thousand, seven hundred twenty".