1445331453555 has 64 divisors (see below), whose sum is σ = 2623748497920. Its totient is φ = 673248844800.

The previous prime is 1445331453551. The next prime is 1445331453571. The reversal of 1445331453555 is 5553541335441.

It is not a de Polignac number, because 1445331453555 - 2² = 1445331453551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1445331453551) 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, 1236970 + ... + 2102559.

It is an arithmetic number, because the mean of its divisors is an integer number (40996070280).

Almost surely, 2^{1445331453555} is an apocalyptic number.

1445331453555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1445331453555 is a deficient number, since it is larger than the sum of its proper divisors (1178417044365).

1445331453555 is a wasteful number, since it uses less digits than its factorization.

1445331453555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339652.

The product of its digits is 5400000, while the sum is 48.

Adding to 1445331453555 its reverse (5553541335441), we get a palindrome (6998872788996).

The spelling of 1445331453555 in words is "one trillion, four hundred forty-five billion, three hundred thirty-one million, four hundred fifty-three thousand, five hundred fifty-five".