40144542530 has 32 divisors (see below), whose sum is σ = 74890373040. Its totient is φ = 15475380480.

The previous prime is 40144542517. The next prime is 40144542589. The reversal of 40144542530 is 3524544104.

It can be written as a sum of positive squares in 8 ways, for example, as 3838669849 + 36305872681 = 61957^2 + 190541^2 .

It is a super-2 number, since 2×40144542530² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28952 + ... + 284828.

Almost surely, 2^40144542530 is an apocalyptic number.

40144542530 is a deficient number, since it is larger than the sum of its proper divisors (34745830510).

40144542530 is a wasteful number, since it uses less digits than its factorization.

40144542530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256454.

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 40144542530 in words is "forty billion, one hundred forty-four million, five hundred forty-two thousand, five hundred thirty".