20151501315 has 64 divisors (see below), whose sum is σ = 35651653632. Its totient is φ = 9638336000.

The previous prime is 20151501269. The next prime is 20151501317. The reversal of 20151501315 is 51310515102.

It is not a de Polignac number, because 20151501315 - 2⁷ = 20151501187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20151501317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4880782 + ... + 4884908.

It is an arithmetic number, because the mean of its divisors is an integer number (557057088).

Almost surely, 2^20151501315 is an apocalyptic number.

20151501315 is a deficient number, since it is larger than the sum of its proper divisors (15500152317).

20151501315 is a wasteful number, since it uses less digits than its factorization.

20151501315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540.

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 20151501315 in words is "twenty billion, one hundred fifty-one million, five hundred one thousand, three hundred fifteen".