83124180426781 has 16 divisors (see below), whose sum is σ = 90178342752960. Its totient is φ = 76165825829760.

The previous prime is 83124180426779. The next prime is 83124180426787. The reversal of 83124180426781 is 18762408142138.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 83124180426781 - 2¹ = 83124180426779 is a prime.

It is a super-2 number, since 2×83124180426781² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83124180426787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30414240 + ... + 33034441.

It is an arithmetic number, because the mean of its divisors is an integer number (5636146422060).

Almost surely, 2^{83124180426781} is an apocalyptic number.

It is an amenable number.

83124180426781 is a deficient number, since it is larger than the sum of its proper divisors (7054162326179).

83124180426781 is a wasteful number, since it uses less digits than its factorization.

83124180426781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63449436.

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 83124180426781 in words is "eighty-three trillion, one hundred twenty-four billion, one hundred eighty million, four hundred twenty-six thousand, seven hundred eighty-one".