1256132611051 has 8 divisors (see below), whose sum is σ = 1257098414000. Its totient is φ = 1255166932320.

The previous prime is 1256132611007. The next prime is 1256132611087. The reversal of 1256132611051 is 1501162316521.

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

It is a cyclic number.

It is not a de Polignac number, because 1256132611051 - 2³¹ = 1253985127403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1256132610998 and 1256132611016.

It is not an unprimeable number, because it can be changed into a prime (1256132611751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34133281 + ... + 34170061.

It is an arithmetic number, because the mean of its divisors is an integer number (157137301750).

Almost surely, 2^{1256132611051} is an apocalyptic number.

1256132611051 is a deficient number, since it is larger than the sum of its proper divisors (965802949).

1256132611051 is a wasteful number, since it uses less digits than its factorization.

1256132611051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62109.

The product of its (nonzero) digits is 10800, while the sum is 34.

Adding to 1256132611051 its reverse (1501162316521), we get a palindrome (2757294927572).

The spelling of 1256132611051 in words is "one trillion, two hundred fifty-six billion, one hundred thirty-two million, six hundred eleven thousand, fifty-one".