91887484953616 has 45 divisors (see below), whose sum is σ = 195688966658143. Its totient is φ = 41766846899360.

The previous prime is 91887484953611. The next prime is 91887484953623. The reversal of 91887484953616 is 61635948478819.

The square root of 91887484953616 is 9585796.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×91887484953616² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91887484953611) 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 8 ways as a sum of consecutive naturals, for example, 421666095 + ... + 421883953.

Almost surely, 2^{91887484953616} is an apocalyptic number.

91887484953616 is the 9585796-th square number.

It is an amenable number.

91887484953616 is an abundant number, since it is smaller than the sum of its proper divisors (103801481704527).

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

91887484953616 is an frugal number, since it uses more digits than its factorization.

91887484953616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435748 (or 217872 counting only the distinct ones).

The product of its digits is 2508226560, while the sum is 79.

The spelling of 91887484953616 in words is "ninety-one trillion, eight hundred eighty-seven billion, four hundred eighty-four million, nine hundred fifty-three thousand, six hundred sixteen".