20150501017 has 2 divisors, whose sum is σ = 20150501018. Its totient is φ = 20150501016.

The previous prime is 20150501009. The next prime is 20150501051. The reversal of 20150501017 is 71010505102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10704799296 + 9445701721 = 103464^2 + 97189^2 .

It is a cyclic number.

It is not a de Polignac number, because 20150501017 - 2³ = 20150501009 is a prime.

It is a super-2 number, since 2×20150501017² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20150501057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075250508 + 10075250509.

It is an arithmetic number, because the mean of its divisors is an integer number (10075250509).

Almost surely, 2^20150501017 is an apocalyptic number.

It is an amenable number.

20150501017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20150501017 is an equidigital number, since it uses as much as digits as its factorization.

20150501017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 22.

The spelling of 20150501017 in words is "twenty billion, one hundred fifty million, five hundred one thousand, seventeen".