83100010788021 has 64 divisors (see below), whose sum is σ = 116842521600000. Its totient is φ = 52464714301440.

The previous prime is 83100010788007. The next prime is 83100010788073. The reversal of 83100010788021 is 12088701000138.

It is not a de Polignac number, because 83100010788021 - 2¹¹ = 83100010785973 is a prime.

It is a super-2 number, since 2×83100010788021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83100010786021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1066727130 + ... + 1066805028.

It is an arithmetic number, because the mean of its divisors is an integer number (1825664400000).

Almost surely, 2^{83100010788021} is an apocalyptic number.

It is an amenable number.

83100010788021 is a deficient number, since it is larger than the sum of its proper divisors (33742510811979).

83100010788021 is a wasteful number, since it uses less digits than its factorization.

83100010788021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78874.

The product of its (nonzero) digits is 21504, while the sum is 39.

Adding to 83100010788021 its reverse (12088701000138), we get a palindrome (95188711788159).

The spelling of 83100010788021 in words is "eighty-three trillion, one hundred billion, ten million, seven hundred eighty-eight thousand, twenty-one".