106445521510621 has 4 divisors (see below), whose sum is σ = 106445550857632. Its totient is φ = 106445492163612.

The previous prime is 106445521510613. The next prime is 106445521510693. The reversal of 106445521510621 is 126015125544601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 106445521510621 - 2³ = 106445521510613 is a prime.

It is a super-2 number, since 2×106445521510621² (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 (106445521510921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8314095 + ... + 16793308.

It is an arithmetic number, because the mean of its divisors is an integer number (26611387714408).

Almost surely, 2^{106445521510621} is an apocalyptic number.

It is an amenable number.

106445521510621 is a deficient number, since it is larger than the sum of its proper divisors (29347011).

106445521510621 is an equidigital number, since it uses as much as digits as its factorization.

106445521510621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29347010.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 106445521510621 in words is "one hundred six trillion, four hundred forty-five billion, five hundred twenty-one million, five hundred ten thousand, six hundred twenty-one".