93641213031921 has 27 divisors (see below), whose sum is σ = 136305462925177. Its totient is φ = 61948413763080.

The previous prime is 93641213031829. The next prime is 93641213032001. The reversal of 93641213031921 is 12913031214639.

The square root of 93641213031921 is 9676839.

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

93641213031921 is a `hidden beast` number, since 9 + 36 + 4 + 121 + 303 + 192 + 1 = 666.

It is not a de Polignac number, because 93641213031921 - 2¹¹ = 93641213029873 is a prime.

It is a super-2 number, since 2×93641213031921² (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 (93641213030921) 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, 3802985416 + ... + 3803010038.

Almost surely, 2^{93641213031921} is an apocalyptic number.

93641213031921 is the 9676839-th square number.

93641213031921 is the 4838420-th centered octagonal number.

It is an amenable number.

93641213031921 is a deficient number, since it is larger than the sum of its proper divisors (42664249893256).

93641213031921 is an frugal number, since it uses more digits than its factorization.

93641213031921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49514 (or 24757 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 93641213031921 in words is "ninety-three trillion, six hundred forty-one billion, two hundred thirteen million, thirty-one thousand, nine hundred twenty-one".