6503791777040 has 80 divisors (see below), whose sum is σ = 15266695511808. Its totient is φ = 2576518099968.

The previous prime is 6503791776941. The next prime is 6503791777097. The reversal of 6503791777040 is 407771973056.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32711369 + ... + 32909591.

Almost surely, 2^{6503791777040} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6503791777040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7633347755904).

6503791777040 is an abundant number, since it is smaller than the sum of its proper divisors (8762903734768).

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

6503791777040 is a wasteful number, since it uses less digits than its factorization.

6503791777040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202176 (or 202170 counting only the distinct ones).

The product of its (nonzero) digits is 7779240, while the sum is 56.

The spelling of 6503791777040 in words is "six trillion, five hundred three billion, seven hundred ninety-one million, seven hundred seventy-seven thousand, forty".