1445464297440 has 240 divisors, whose sum is σ = 5209824578112. Its totient is φ = 377255771136.

The previous prime is 1445464297357. The next prime is 1445464297441. The reversal of 1445464297440 is 447924645441.

1445464297440 is a `hidden beast` number, since 1 + 4 + 4 + 54 + 64 + 2 + 97 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445464297441) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 577399 + ... + 1795638.

Almost surely, 2^{1445464297440} is an apocalyptic number.

1445464297440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445464297440 is an abundant number, since it is smaller than the sum of its proper divisors (3764360280672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445464297440 is a wasteful number, since it uses less digits than its factorization.

1445464297440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373111 (or 2373094 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 54.

The spelling of 1445464297440 in words is "one trillion, four hundred forty-five billion, four hundred sixty-four million, two hundred ninety-seven thousand, four hundred forty".