5721216771055 has 4 divisors (see below), whose sum is σ = 6865460125272. Its totient is φ = 4576973416840.

The previous prime is 5721216771047. The next prime is 5721216771089. The reversal of 5721216771055 is 5501776121275.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5721216771055 - 2³ = 5721216771047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572121677101 + ... + 572121677110.

It is an arithmetic number, because the mean of its divisors is an integer number (1716365031318).

Almost surely, 2^{5721216771055} is an apocalyptic number.

5721216771055 is a deficient number, since it is larger than the sum of its proper divisors (1144243354217).

5721216771055 is a wasteful number, since it uses less digits than its factorization.

5721216771055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144243354216.

The product of its (nonzero) digits is 1029000, while the sum is 49.

The spelling of 5721216771055 in words is "five trillion, seven hundred twenty-one billion, two hundred sixteen million, seven hundred seventy-one thousand, fifty-five".