1051057556005 has 4 divisors (see below), whose sum is σ = 1261269067212. Its totient is φ = 840846044800.

The previous prime is 1051057555967. The next prime is 1051057556077. The reversal of 1051057556005 is 5006557501501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 393688482916 + 657369073089 = 627446^2 + 810783^2 .

It is not a de Polignac number, because 1051057556005 - 2²⁷ = 1050923338277 is a prime.

It is a super-2 number, since 2×1051057556005² (a number of 25 digits) contains 22 as substring.

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, 105105755596 + ... + 105105755605.

It is an arithmetic number, because the mean of its divisors is an integer number (315317266803).

Almost surely, 2^{1051057556005} is an apocalyptic number.

It is an amenable number.

1051057556005 is a deficient number, since it is larger than the sum of its proper divisors (210211511207).

1051057556005 is an equidigital number, since it uses as much as digits as its factorization.

1051057556005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210211511206.

The product of its (nonzero) digits is 131250, while the sum is 40.

The spelling of 1051057556005 in words is "one trillion, fifty-one billion, fifty-seven million, five hundred fifty-six thousand, five".