106645685523 has 32 divisors (see below), whose sum is σ = 170673753600. Its totient is φ = 58516701696.

The previous prime is 106645685449. The next prime is 106645685527. The reversal of 106645685523 is 325586546601.

It is not a de Polignac number, because 106645685523 - 2⁹ = 106645685011 is a prime.

It is a super-2 number, since 2×106645685523² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (106645685527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4220383 + ... + 4245576.

It is an arithmetic number, because the mean of its divisors is an integer number (5333554800).

Almost surely, 2^106645685523 is an apocalyptic number.

106645685523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

106645685523 is a deficient number, since it is larger than the sum of its proper divisors (64028068077).

106645685523 is a wasteful number, since it uses less digits than its factorization.

106645685523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8466011.

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 106645685523 in words is "one hundred six billion, six hundred forty-five million, six hundred eighty-five thousand, five hundred twenty-three".