144615544426661 has 64 divisors (see below), whose sum is σ = 185983818080256. Its totient is φ = 109185400396800.

The previous prime is 144615544426657. The next prime is 144615544426673. The reversal of 144615544426661 is 166624445516441.

It is not a de Polignac number, because 144615544426661 - 2² = 144615544426657 is a prime.

It is a super-2 number, since 2×144615544426661² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144615544426661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144615544426361) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 348624506 + ... + 349039076.

It is an arithmetic number, because the mean of its divisors is an integer number (2905997157504).

Almost surely, 2^{144615544426661} is an apocalyptic number.

144615544426661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144615544426661 is a deficient number, since it is larger than the sum of its proper divisors (41368273653595).

144615544426661 is a wasteful number, since it uses less digits than its factorization.

144615544426661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415602.

The product of its digits is 66355200, while the sum is 59.

The spelling of 144615544426661 in words is "one hundred forty-four trillion, six hundred fifteen billion, five hundred forty-four million, four hundred twenty-six thousand, six hundred sixty-one".