1155402154515 has 16 divisors (see below), whose sum is σ = 2112735368448. Its totient is φ = 528183842016.

The previous prime is 1155402154513. The next prime is 1155402154541. The reversal of 1155402154515 is 5154512045511.

It is not a de Polignac number, because 1155402154515 - 2¹ = 1155402154513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155402154513) 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, 5501914917 + ... + 5501915126.

It is an arithmetic number, because the mean of its divisors is an integer number (132045960528).

Almost surely, 2^{1155402154515} is an apocalyptic number.

1155402154515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1155402154515 is a deficient number, since it is larger than the sum of its proper divisors (957333213933).

1155402154515 is a wasteful number, since it uses less digits than its factorization.

1155402154515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11003830058.

The product of its (nonzero) digits is 100000, while the sum is 39.

The spelling of 1155402154515 in words is "one trillion, one hundred fifty-five billion, four hundred two million, one hundred fifty-four thousand, five hundred fifteen".