2591381701680 has 40 divisors (see below), whose sum is σ = 8033283275952. Its totient is φ = 691035120384.

The previous prime is 2591381701679. The next prime is 2591381701687. The reversal of 2591381701680 is 861071831952.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2591381701687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5398711639 + ... + 5398712118.

Almost surely, 2^{2591381701680} is an apocalyptic number.

2591381701680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2591381701680 is an abundant number, since it is smaller than the sum of its proper divisors (5441901574272).

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

2591381701680 is a wasteful number, since it uses less digits than its factorization.

2591381701680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10797423773 (or 10797423767 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 2591381701680 in words is "two trillion, five hundred ninety-one billion, three hundred eighty-one million, seven hundred one thousand, six hundred eighty".