2056671492101 has 4 divisors (see below), whose sum is σ = 2056687341804. Its totient is φ = 2056655642400.

The previous prime is 2056671492089. The next prime is 2056671492107. The reversal of 2056671492101 is 1012941766502.

It is a Cunningham number, because it is equal to 1434110²+1.

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 80957320900 + 1975714171201 = 284530^2 + 1405601^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056671492101 - 2²⁶ = 2056604383237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056671492107) 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, 7728590 + ... + 7990271.

It is an arithmetic number, because the mean of its divisors is an integer number (514171835451).

Almost surely, 2^{2056671492101} is an apocalyptic number.

It is an amenable number.

2056671492101 is a deficient number, since it is larger than the sum of its proper divisors (15849703).

2056671492101 is a wasteful number, since it uses less digits than its factorization.

2056671492101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15849702.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 2056671492101 in words is "two trillion, fifty-six billion, six hundred seventy-one million, four hundred ninety-two thousand, one hundred one".