140004001544 has 24 divisors (see below), whose sum is σ = 288541306830. Its totient is φ = 63638182080.

The previous prime is 140004001507. The next prime is 140004001573. The reversal of 140004001544 is 445100400041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 114710916100 + 25293085444 = 338690^2 + 159038^2 .

It is a super-2 number, since 2×140004001544² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72315149 + ... + 72317084.

Almost surely, 2^140004001544 is an apocalyptic number.

It is an amenable number.

140004001544 is an abundant number, since it is smaller than the sum of its proper divisors (148537305286).

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

140004001544 is a wasteful number, since it uses less digits than its factorization.

140004001544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144632261 (or 144632246 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 140004001544 its reverse (445100400041), we get a palindrome (585104401585).

The spelling of 140004001544 in words is "one hundred forty billion, four million, one thousand, five hundred forty-four".