102791546489 has 4 divisors (see below), whose sum is σ = 102793596324. Its totient is φ = 102789496656.

The previous prime is 102791546471. The next prime is 102791546491. The reversal of 102791546489 is 984645197201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75166447225 + 27625099264 = 274165^2 + 166208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102791546489 is a prime.

It is a super-2 number, since 2×102791546489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102791545489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947762 + ... + 1050635.

It is an arithmetic number, because the mean of its divisors is an integer number (25698399081).

Almost surely, 2^102791546489 is an apocalyptic number.

It is an amenable number.

102791546489 is a deficient number, since it is larger than the sum of its proper divisors (2049835).

102791546489 is an equidigital number, since it uses as much as digits as its factorization.

102791546489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049834.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 102791546489 in words is "one hundred two billion, seven hundred ninety-one million, five hundred forty-six thousand, four hundred eighty-nine".