145617158855 has 32 divisors (see below), whose sum is σ = 206206967808. Its totient is φ = 96601968000.

The previous prime is 145617158821. The next prime is 145617158857. The reversal of 145617158855 is 558851716541.

It is not a de Polignac number, because 145617158855 - 2¹⁰ = 145617157831 is a prime.

It is a super-2 number, since 2×145617158855² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145617158855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145617158857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3997454 + ... + 4033716.

It is an arithmetic number, because the mean of its divisors is an integer number (6443967744).

Almost surely, 2^145617158855 is an apocalyptic number.

145617158855 is a deficient number, since it is larger than the sum of its proper divisors (60589808953).

145617158855 is a wasteful number, since it uses less digits than its factorization.

145617158855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40007.

The product of its digits is 6720000, while the sum is 56.

The spelling of 145617158855 in words is "one hundred forty-five billion, six hundred seventeen million, one hundred fifty-eight thousand, eight hundred fifty-five".