1445551612440 has 64 divisors (see below), whose sum is σ = 4670243676000. Its totient is φ = 355828088832.

The previous prime is 1445551612411. The next prime is 1445551612451. The reversal of 1445551612440 is 442161555441.

It is a junction number, because it is equal to n+sod(n) for n = 1445551612392 and 1445551612401.

It is a congruent number.

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, 463316265 + ... + 463319384.

Almost surely, 2^{1445551612440} is an apocalyptic number.

1445551612440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445551612440 is an abundant number, since it is smaller than the sum of its proper divisors (3224692063560).

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

1445551612440 is a wasteful number, since it uses less digits than its factorization.

1445551612440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926635676 (or 926635672 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 1445551612440 in words is "one trillion, four hundred forty-five billion, five hundred fifty-one million, six hundred twelve thousand, four hundred forty".