1500380042821 has 16 divisors (see below), whose sum is σ = 1661067975168. Its totient is φ = 1343866521600.

The previous prime is 1500380042807. The next prime is 1500380042873. The reversal of 1500380042821 is 1282400830051.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1500380042821 is a prime.

It is a super-2 number, since 2×1500380042821² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500380342821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2914900 + ... + 3390781.

It is an arithmetic number, because the mean of its divisors is an integer number (103816748448).

Almost surely, 2^{1500380042821} is an apocalyptic number.

1500380042821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1500380042821 is a deficient number, since it is larger than the sum of its proper divisors (160687932347).

1500380042821 is a wasteful number, since it uses less digits than its factorization.

1500380042821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6306012.

The product of its (nonzero) digits is 15360, while the sum is 34.

Adding to 1500380042821 its reverse (1282400830051), we get a palindrome (2782780872872).

The spelling of 1500380042821 in words is "one trillion, five hundred billion, three hundred eighty million, forty-two thousand, eight hundred twenty-one".