20150513135 has 8 divisors (see below), whose sum is σ = 24205994640. Its totient is φ = 16103491264.

The previous prime is 20150513111. The next prime is 20150513147. The reversal of 20150513135 is 53131505102.

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 a de Polignac number, because none of the positive numbers 2^k-20150513135 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109665 + ... + 2119194.

It is an arithmetic number, because the mean of its divisors is an integer number (3025749330).

Almost surely, 2^20150513135 is an apocalyptic number.

20150513135 is a deficient number, since it is larger than the sum of its proper divisors (4055481505).

20150513135 is an equidigital number, since it uses as much as digits as its factorization.

20150513135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229817.

The product of its (nonzero) digits is 2250, while the sum is 26.

The spelling of 20150513135 in words is "twenty billion, one hundred fifty million, five hundred thirteen thousand, one hundred thirty-five".