1215106457173 has 8 divisors (see below), whose sum is σ = 1388700069120. Its totient is φ = 1041514589040.

The previous prime is 1215106457171. The next prime is 1215106457177. The reversal of 1215106457173 is 3717546015121.

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 1215106457173 - 2¹ = 1215106457171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215106457171) 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, 1871283 + ... + 2435551.

It is an arithmetic number, because the mean of its divisors is an integer number (173587508640).

Almost surely, 2^{1215106457173} is an apocalyptic number.

It is an amenable number.

1215106457173 is a deficient number, since it is larger than the sum of its proper divisors (173593611947).

1215106457173 is an equidigital number, since it uses as much as digits as its factorization.

1215106457173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871907.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 1215106457173 in words is "one trillion, two hundred fifteen billion, one hundred six million, four hundred fifty-seven thousand, one hundred seventy-three".