4451642461544 has 8 divisors (see below), whose sum is σ = 8346829615410. Its totient is φ = 2225821230768.

The previous prime is 4451642461493. The next prime is 4451642461613.

4451642461544 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 2346932080900 + 2104710380644 = 1531970^2 + 1450762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 4451642461492 and 4451642461501.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278227653839 + ... + 278227653854.

Almost surely, 2^{4451642461544} is an apocalyptic number.

It is an amenable number.

4451642461544 is a deficient number, since it is larger than the sum of its proper divisors (3895187153866).

4451642461544 is a wasteful number, since it uses less digits than its factorization.

4451642461544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556455307699 (or 556455307695 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 50.

The spelling of 4451642461544 in words is "four trillion, four hundred fifty-one billion, six hundred forty-two million, four hundred sixty-one thousand, five hundred forty-four".