20150521315 has 16 divisors (see below), whose sum is σ = 24583176576. Its totient is φ = 15852182400.

The previous prime is 20150521273. The next prime is 20150521337. The reversal of 20150521315 is 51312505102.

It is not a de Polignac number, because 20150521315 - 2¹¹ = 20150519267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20150521315.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2063334 + ... + 2073076.

It is an arithmetic number, because the mean of its divisors is an integer number (1536448536).

Almost surely, 2^20150521315 is an apocalyptic number.

20150521315 is a deficient number, since it is larger than the sum of its proper divisors (4432655261).

20150521315 is an equidigital number, since it uses as much as digits as its factorization.

20150521315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16590.

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 20150521315 in words is "twenty billion, one hundred fifty million, five hundred twenty-one thousand, three hundred fifteen".