144649815754 has 32 divisors (see below), whose sum is σ = 220993920000. Its totient is φ = 70996982784.

The previous prime is 144649815731. The next prime is 144649815769. The reversal of 144649815754 is 457518946441.

It is a super-2 number, since 2×144649815754² (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 15 ways as a sum of consecutive naturals, for example, 20782527 + ... + 20789485.

It is an arithmetic number, because the mean of its divisors is an integer number (6906060000).

Almost surely, 2^144649815754 is an apocalyptic number.

144649815754 is a deficient number, since it is larger than the sum of its proper divisors (76344104246).

144649815754 is a wasteful number, since it uses less digits than its factorization.

144649815754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7782.

The product of its digits is 19353600, while the sum is 58.

The spelling of 144649815754 in words is "one hundred forty-four billion, six hundred forty-nine million, eight hundred fifteen thousand, seven hundred fifty-four".