2581516797470 has 128 divisors (see below), whose sum is σ = 5320183680000. Its totient is φ = 893996116992.

The previous prime is 2581516797467. The next prime is 2581516797479. The reversal of 2581516797470 is 747976151852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581516797479) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 792604082 + ... + 792607338.

It is an arithmetic number, because the mean of its divisors is an integer number (41563935000).

Almost surely, 2^{2581516797470} is an apocalyptic number.

2581516797470 is an abundant number, since it is smaller than the sum of its proper divisors (2738666882530).

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

2581516797470 is a wasteful number, since it uses less digits than its factorization.

2581516797470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6402.

The product of its (nonzero) digits is 29635200, while the sum is 62.

The spelling of 2581516797470 in words is "two trillion, five hundred eighty-one billion, five hundred sixteen million, seven hundred ninety-seven thousand, four hundred seventy".