1051155661053 has 4 divisors (see below), whose sum is σ = 1401540881408. Its totient is φ = 700770440700.

The previous prime is 1051155661051. The next prime is 1051155661063. The reversal of 1051155661053 is 3501665511501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1051155661053 - 2¹ = 1051155661051 is a prime.

It is a super-2 number, since 2×1051155661053² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051155661051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175192610173 + ... + 175192610178.

It is an arithmetic number, because the mean of its divisors is an integer number (350385220352).

Almost surely, 2^{1051155661053} is an apocalyptic number.

It is an amenable number.

1051155661053 is a deficient number, since it is larger than the sum of its proper divisors (350385220355).

1051155661053 is an equidigital number, since it uses as much as digits as its factorization.

1051155661053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350385220354.

The product of its (nonzero) digits is 67500, while the sum is 39.

The spelling of 1051155661053 in words is "one trillion, fifty-one billion, one hundred fifty-five million, six hundred sixty-one thousand, fifty-three".