1445638765455 has 48 divisors (see below), whose sum is σ = 2547087734880. Its totient is φ = 758297721600.

The previous prime is 1445638765451. The next prime is 1445638765457. The reversal of 1445638765455 is 5545678365441.

1445638765455 is a `hidden beast` number, since 1 + 4 + 4 + 5 + 6 + 3 + 87 + 6 + 545 + 5 = 666.

It is not a de Polignac number, because 1445638765455 - 2² = 1445638765451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1445638765392 and 1445638765401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445638765451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44422540 + ... + 44455070.

It is an arithmetic number, because the mean of its divisors is an integer number (53064327810).

Almost surely, 2^{1445638765455} is an apocalyptic number.

1445638765455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1445638765455 is a deficient number, since it is larger than the sum of its proper divisors (1101448969425).

1445638765455 is a wasteful number, since it uses less digits than its factorization.

1445638765455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48792 (or 48789 counting only the distinct ones).

The product of its digits is 241920000, while the sum is 63.

The spelling of 1445638765455 in words is "one trillion, four hundred forty-five billion, six hundred thirty-eight million, seven hundred sixty-five thousand, four hundred fifty-five".