40144534255530 has 48 divisors (see below), whose sum is σ = 105845870617344. Its totient is φ = 10554431539680.

The previous prime is 40144534255471. The next prime is 40144534255537. The reversal of 40144534255530 is 3555243544104.

40144534255530 is a `hidden beast` number, since 4 + 0 + 1 + 4 + 4 + 53 + 42 + 5 + 553 + 0 = 666.

It is a super-2 number, since 2×40144534255530² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (40144534255537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3141193474 + ... + 3141206253.

It is an arithmetic number, because the mean of its divisors is an integer number (2205122304528).

Almost surely, 2^{40144534255530} is an apocalyptic number.

40144534255530 is an abundant number, since it is smaller than the sum of its proper divisors (65701336361814).

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

40144534255530 is a wasteful number, since it uses less digits than its factorization.

40144534255530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282399811 (or 6282399808 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 45.

Adding to 40144534255530 its reverse (3555243544104), we get a palindrome (43699777799634).

It can be divided in two parts, 401445 and 34255530, that added together give a triangular number (34656975 = T₈₃₂₅).

The spelling of 40144534255530 in words is "forty trillion, one hundred forty-four billion, five hundred thirty-four million, two hundred fifty-five thousand, five hundred thirty".