155512140415 has 16 divisors (see below), whose sum is σ = 195017315328. Its totient is φ = 118930998816.

The previous prime is 155512140409. The next prime is 155512140449. The reversal of 155512140415 is 514041215551.

It is a cyclic number.

It is not a de Polignac number, because 155512140415 - 2⁵ = 155512140383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7684707 + ... + 7704916.

It is an arithmetic number, because the mean of its divisors is an integer number (12188582208).

Almost surely, 2^155512140415 is an apocalyptic number.

155512140415 is a deficient number, since it is larger than the sum of its proper divisors (39505174913).

155512140415 is a wasteful number, since it uses less digits than its factorization.

155512140415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15389718.

The product of its (nonzero) digits is 20000, while the sum is 34.

Adding to 155512140415 its reverse (514041215551), we get a palindrome (669553355966).

The spelling of 155512140415 in words is "one hundred fifty-five billion, five hundred twelve million, one hundred forty thousand, four hundred fifteen".