2557356005506 has 8 divisors (see below), whose sum is σ = 3836340511740. Its totient is φ = 1278575834928.

The previous prime is 2557356005363. The next prime is 2557356005531. The reversal of 2557356005506 is 6055006537552.

It can be written as a sum of positive squares in 2 ways, for example, as 2536664621481 + 20691384025 = 1592691^2 + 143845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2557356005506.

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, 51052621 + ... + 51102688.

Almost surely, 2^{2557356005506} is an apocalyptic number.

2557356005506 is a deficient number, since it is larger than the sum of its proper divisors (1278984506234).

2557356005506 is a wasteful number, since it uses less digits than its factorization.

2557356005506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102167828.

The product of its (nonzero) digits is 4725000, while the sum is 49.

The spelling of 2557356005506 in words is "two trillion, five hundred fifty-seven billion, three hundred fifty-six million, five thousand, five hundred six".