20150015532 has 12 divisors (see below), whose sum is σ = 47016702936. Its totient is φ = 6716671840.

The previous prime is 20150015521. The next prime is 20150015537. The reversal of 20150015532 is 23551005102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20150015537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839583969 + ... + 839583992.

It is an arithmetic number, because the mean of its divisors is an integer number (3918058578).

Almost surely, 2^20150015532 is an apocalyptic number.

It is an amenable number.

20150015532 is an abundant number, since it is smaller than the sum of its proper divisors (26866687404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20150015532 is a wasteful number, since it uses less digits than its factorization.

20150015532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679167968 (or 1679167966 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 20150015532 in words is "twenty billion, one hundred fifty million, fifteen thousand, five hundred thirty-two".