1015120331145 has 48 divisors (see below), whose sum is σ = 1765582857792. Its totient is φ = 539540115840.

The previous prime is 1015120331143. The next prime is 1015120331171. The reversal of 1015120331145 is 5411330215101.

1015120331145 is a `hidden beast` number, since 1 + 0 + 1 + 512 + 0 + 3 + 3 + 1 + 145 = 666.

It is not a de Polignac number, because 1015120331145 - 2¹ = 1015120331143 is a prime.

It is a super-2 number, since 2×1015120331145² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1015120331143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40099582 + ... + 40124888.

It is an arithmetic number, because the mean of its divisors is an integer number (36782976204).

Almost surely, 2^{1015120331145} is an apocalyptic number.

1015120331145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1015120331145 is a deficient number, since it is larger than the sum of its proper divisors (750462526647).

1015120331145 is a wasteful number, since it uses less digits than its factorization.

1015120331145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28342 (or 28339 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 1015120331145 its reverse (5411330215101), we get a palindrome (6426450546246).

The spelling of 1015120331145 in words is "one trillion, fifteen billion, one hundred twenty million, three hundred thirty-one thousand, one hundred forty-five".