106660400421 has 8 divisors (see below), whose sum is σ = 145682498304. Its totient is φ = 69372618080.

The previous prime is 106660400419. The next prime is 106660400467. The reversal of 106660400421 is 124004066601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 106660400421 - 2¹ = 106660400419 is a prime.

It is a super-2 number, since 2×106660400421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106660400401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433578741 + ... + 433578986.

It is an arithmetic number, because the mean of its divisors is an integer number (18210312288).

Almost surely, 2^106660400421 is an apocalyptic number.

It is an amenable number.

106660400421 is a deficient number, since it is larger than the sum of its proper divisors (39022097883).

106660400421 is an equidigital number, since it uses as much as digits as its factorization.

106660400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867157771.

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 106660400421 in words is "one hundred six billion, six hundred sixty million, four hundred thousand, four hundred twenty-one".