92123990781 has 16 divisors (see below), whose sum is σ = 123326974848. Its totient is φ = 61168996800.

The previous prime is 92123990771. The next prime is 92123990797. The reversal of 92123990781 is 18709932129.

It is not a de Polignac number, because 92123990781 - 2⁹ = 92123990269 is a prime.

It is a super-2 number, since 2×92123990781² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92123990771) 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 15 ways as a sum of consecutive naturals, for example, 686640 + ... + 809766.

It is an arithmetic number, because the mean of its divisors is an integer number (7707935928).

Almost surely, 2^92123990781 is an apocalyptic number.

It is an amenable number.

92123990781 is a deficient number, since it is larger than the sum of its proper divisors (31202984067).

92123990781 is a wasteful number, since it uses less digits than its factorization.

92123990781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124132.

The product of its (nonzero) digits is 489888, while the sum is 51.

It can be divided in two parts, 9212 and 3990781, that added together give a palindrome (3999993).

The spelling of 92123990781 in words is "ninety-two billion, one hundred twenty-three million, nine hundred ninety thousand, seven hundred eighty-one".