121786365490596 has 81 divisors (see below), whose sum is σ = 327025868897091. Its totient is φ = 38207134070784.

The previous prime is 121786365490567. The next prime is 121786365490597. The reversal of 121786365490596 is 695094563687121.

It is a happy number.

The square root of 121786365490596 is 11035686.

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

121786365490596 is a `hidden beast` number, since 1 + 2 + 1 + 7 + 86 + 3 + 6 + 5 + 490 + 59 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9394139180196 + 112392226310400 = 3064986^2 + 10601520^2 .

It is not an unprimeable number, because it can be changed into a prime (121786365490597) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1125585876 + ... + 1125694068.

It is a 1-persistent number, because it is pandigital, but 2⋅121786365490596 = 243572730981192 is not.

Almost surely, 2^{121786365490596} is an apocalyptic number.

121786365490596 is the 11035686-th square number.

It is an amenable number.

121786365490596 is an abundant number, since it is smaller than the sum of its proper divisors (205239503406495).

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

121786365490596 is an frugal number, since it uses more digits than its factorization.

121786365490596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216430 (or 108215 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 72.

The spelling of 121786365490596 in words is "one hundred twenty-one trillion, seven hundred eighty-six billion, three hundred sixty-five million, four hundred ninety thousand, five hundred ninety-six".