155411540560 has 80 divisors (see below), whose sum is σ = 375397111440. Its totient is φ = 59763200000.

The previous prime is 155411540551. The next prime is 155411540567. The reversal of 155411540560 is 65045114551.

It can be written as a sum of positive squares in 8 ways, for example, as 23174581824 + 132236958736 = 152232^2 + 363644^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×155411540560² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155411540567) 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, 396810 + ... + 684310.

It is an arithmetic number, because the mean of its divisors is an integer number (4692463893).

Almost surely, 2^155411540560 is an apocalyptic number.

155411540560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155411540560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187698555720).

155411540560 is an abundant number, since it is smaller than the sum of its proper divisors (219985570880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155411540560 is a wasteful number, since it uses less digits than its factorization.

155411540560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287776 (or 287770 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 37.

The spelling of 155411540560 in words is "one hundred fifty-five billion, four hundred eleven million, five hundred forty thousand, five hundred sixty".