1282647780540 has 72 divisors (see below), whose sum is σ = 4446512310240. Its totient is φ = 293176635264.

The previous prime is 1282647780527. The next prime is 1282647780559. The reversal of 1282647780540 is 450877462821.

1282647780540 is a `hidden beast` number, since 1 + 2 + 8 + 26 + 4 + 7 + 78 + 0 + 540 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 508985955 + ... + 508988474.

It is an arithmetic number, because the mean of its divisors is an integer number (61757115420).

Almost surely, 2^{1282647780540} is an apocalyptic number.

1282647780540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1282647780540 is an abundant number, since it is smaller than the sum of its proper divisors (3163864529700).

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

1282647780540 is a wasteful number, since it uses less digits than its factorization.

1282647780540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017974451 (or 1017974446 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 54.

The spelling of 1282647780540 in words is "one trillion, two hundred eighty-two billion, six hundred forty-seven million, seven hundred eighty thousand, five hundred forty".