2581630467678 has 48 divisors (see below), whose sum is σ = 5614696584432. Its totient is φ = 857288880000.

The previous prime is 2581630467677. The next prime is 2581630467709. The reversal of 2581630467678 is 8767640361852.

2581630467678 is a `hidden beast` number, since 2 + 5 + 8 + 163 + 0 + 467 + 6 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581630467677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23469888 + ... + 23579628.

It is an arithmetic number, because the mean of its divisors is an integer number (116972845509).

Almost surely, 2^{2581630467678} is an apocalyptic number.

2581630467678 is an abundant number, since it is smaller than the sum of its proper divisors (3033066116754).

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

2581630467678 is a wasteful number, since it uses less digits than its factorization.

2581630467678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114681 (or 114678 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 63.

The spelling of 2581630467678 in words is "two trillion, five hundred eighty-one billion, six hundred thirty million, four hundred sixty-seven thousand, six hundred seventy-eight".