1601706656051 has 4 divisors (see below), whose sum is σ = 1601751468504. Its totient is φ = 1601661843600.

The previous prime is 1601706656027. The next prime is 1601706656117. The reversal of 1601706656051 is 1506566071061.

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

It is a cyclic number.

It is not a de Polignac number, because 1601706656051 - 2³⁸ = 1326828749107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1601706655993 and 1601706656011.

It is not an unprimeable number, because it can be changed into a prime (1601706653051) 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, 22352570 + ... + 22424111.

It is an arithmetic number, because the mean of its divisors is an integer number (400437867126).

Almost surely, 2^{1601706656051} is an apocalyptic number.

1601706656051 is a deficient number, since it is larger than the sum of its proper divisors (44812453).

1601706656051 is an equidigital number, since it uses as much as digits as its factorization.

1601706656051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44812452.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 1601706656051 in words is "one trillion, six hundred one billion, seven hundred six million, six hundred fifty-six thousand, fifty-one".