7144401561 has 12 divisors (see below), whose sum is σ = 10470583536. Its totient is φ = 4329940120.

The previous prime is 7144401559. The next prime is 7144401601. The reversal of 7144401561 is 1651044417.

It is not a de Polignac number, because 7144401561 - 2¹ = 7144401559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (7144401361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9840411 + ... + 9841136.

It is an arithmetic number, because the mean of its divisors is an integer number (872548628).

Almost surely, 2^7144401561 is an apocalyptic number.

It is an amenable number.

7144401561 is a deficient number, since it is larger than the sum of its proper divisors (3326181975).

7144401561 is a wasteful number, since it uses less digits than its factorization.

7144401561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19681572 (or 19681561 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 7144401561 is about 84524.5618799648. The cubic root of 7144401561 is about 1925.9955775323.

Adding to 7144401561 its reverse (1651044417), we get a palindrome (8795445978).

The spelling of 7144401561 in words is "seven billion, one hundred forty-four million, four hundred one thousand, five hundred sixty-one".