144015643531 has 16 divisors (see below), whose sum is σ = 153328287744. Its totient is φ = 134798521984.

The previous prime is 144015643487. The next prime is 144015643579. The reversal of 144015643531 is 135346510441.

It is a cyclic number.

It is not a de Polignac number, because 144015643531 - 2¹⁵ = 144015610763 is a prime.

It is a super-2 number, since 2×144015643531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144015643591) 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, 2227446 + ... + 2291188.

It is an arithmetic number, because the mean of its divisors is an integer number (9583017984).

Almost surely, 2^144015643531 is an apocalyptic number.

144015643531 is a deficient number, since it is larger than the sum of its proper divisors (9312644213).

144015643531 is a wasteful number, since it uses less digits than its factorization.

144015643531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64490.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 144015643531 in words is "one hundred forty-four billion, fifteen million, six hundred forty-three thousand, five hundred thirty-one".