2562780487680 has 1792 divisors, whose sum is σ = 10874495416320. Its totient is φ = 567575838720.

The previous prime is 2562780487661. The next prime is 2562780487691. The reversal of 2562780487680 is 867840872652.

2562780487680 is a `hidden beast` number, since 2 + 5 + 6 + 2 + 78 + 0 + 487 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1792).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 38250455007 + ... + 38250455073.

Almost surely, 2^{2562780487680} is an apocalyptic number.

2562780487680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2562780487680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5437247708160).

2562780487680 is an abundant number, since it is smaller than the sum of its proper divisors (8311714928640).

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

2562780487680 is an frugal number, since it uses more digits than its factorization.

2562780487680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 63.

The spelling of 2562780487680 in words is "two trillion, five hundred sixty-two billion, seven hundred eighty million, four hundred eighty-seven thousand, six hundred eighty".