1500542231215 has 4 divisors (see below), whose sum is σ = 1800650677464. Its totient is φ = 1200433784968.

The previous prime is 1500542231183. The next prime is 1500542231239. The reversal of 1500542231215 is 5121322450051.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1500542231215 - 2⁵ = 1500542231183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150054223117 + ... + 150054223126.

It is an arithmetic number, because the mean of its divisors is an integer number (450162669366).

Almost surely, 2^{1500542231215} is an apocalyptic number.

1500542231215 is a deficient number, since it is larger than the sum of its proper divisors (300108446249).

1500542231215 is an equidigital number, since it uses as much as digits as its factorization.

1500542231215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300108446248.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1500542231215 its reverse (5121322450051), we get a palindrome (6621864681266).

The spelling of 1500542231215 in words is "one trillion, five hundred billion, five hundred forty-two million, two hundred thirty-one thousand, two hundred fifteen".