20150172007 has 8 divisors (see below), whose sum is σ = 23029772832. Its totient is φ = 17270822400.

The previous prime is 20150171983. The next prime is 20150172013. The reversal of 20150172007 is 70027105102.

It is a happy number.

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 20150172007 - 2³¹ = 18002688359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150112007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163407 + ... + 258847.

It is an arithmetic number, because the mean of its divisors is an integer number (2878721604).

Almost surely, 2^20150172007 is an apocalyptic number.

20150172007 is a deficient number, since it is larger than the sum of its proper divisors (2879600825).

20150172007 is an equidigital number, since it uses as much as digits as its factorization.

20150172007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125609.

The product of its (nonzero) digits is 980, while the sum is 25.

Adding to 20150172007 its reverse (70027105102), we get a palindrome (90177277109).

The spelling of 20150172007 in words is "twenty billion, one hundred fifty million, one hundred seventy-two thousand, seven".