155563233545 has 16 divisors (see below), whose sum is σ = 189171840000. Its totient is φ = 122788830528.

The previous prime is 155563233541. The next prime is 155563233547. The reversal of 155563233545 is 545332365551.

It is a cyclic number.

It is not a de Polignac number, because 155563233545 - 2² = 155563233541 is a prime.

It is a super-4 number, since 4×155563233545⁴ (a number of 46 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155563233545.

It is not an unprimeable number, because it can be changed into a prime (155563233541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426656 + ... + 702254.

It is an arithmetic number, because the mean of its divisors is an integer number (11823240000).

Almost surely, 2^155563233545 is an apocalyptic number.

It is an amenable number.

155563233545 is a deficient number, since it is larger than the sum of its proper divisors (33608606455).

155563233545 is a wasteful number, since it uses less digits than its factorization.

155563233545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277112.

The product of its digits is 4050000, while the sum is 47.

The spelling of 155563233545 in words is "one hundred fifty-five billion, five hundred sixty-three million, two hundred thirty-three thousand, five hundred forty-five".