91468777472 has 108 divisors (see below), whose sum is σ = 188619627105. Its totient is φ = 44345180160.

The previous prime is 91468777427. The next prime is 91468777529. The reversal of 91468777472 is 27477786419.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 65323181056 + 26145596416 = 255584^2 + 161696^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=213856.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 561158063 + ... + 561158225.

Almost surely, 2^91468777472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91468777472

91468777472 is an abundant number, since it is smaller than the sum of its proper divisors (97150849633).

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

91468777472 is an frugal number, since it uses more digits than its factorization.

91468777472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 206 counting only the distinct ones).

The product of its digits is 33191424, while the sum is 62.

The spelling of 91468777472 in words is "ninety-one billion, four hundred sixty-eight million, seven hundred seventy-seven thousand, four hundred seventy-two".