5521717766478 has 32 divisors (see below), whose sum is σ = 11088663616800. Its totient is φ = 1833048498816.

The previous prime is 5521717766449. The next prime is 5521717766503. The reversal of 5521717766478 is 8746677171255.

It is a happy number.

It is a congruent number.

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, 153213 + ... + 3326696.

It is an arithmetic number, because the mean of its divisors is an integer number (346520738025).

Almost surely, 2^{5521717766478} is an apocalyptic number.

5521717766478 is an abundant number, since it is smaller than the sum of its proper divisors (5566945850322).

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

5521717766478 is a wasteful number, since it uses less digits than its factorization.

5521717766478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480996.

The product of its digits is 138297600, while the sum is 66.

The spelling of 5521717766478 in words is "five trillion, five hundred twenty-one billion, seven hundred seventeen million, seven hundred sixty-six thousand, four hundred seventy-eight".