15621066701106 has 16 divisors (see below), whose sum is σ = 31281831166944. Its totient is φ = 5200405939584.

The previous prime is 15621066701081. The next prime is 15621066701161. The reversal of 15621066701106 is 60110766012651.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654068415 + ... + 1654077858.

It is an arithmetic number, because the mean of its divisors is an integer number (1955114447934).

Almost surely, 2^{15621066701106} is an apocalyptic number.

15621066701106 is an abundant number, since it is smaller than the sum of its proper divisors (15660764465838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15621066701106 is a wasteful number, since it uses less digits than its factorization.

15621066701106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308147065.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 15621066701106 in words is "fifteen trillion, six hundred twenty-one billion, sixty-six million, seven hundred one thousand, one hundred six".