161126825651 has 16 divisors (see below), whose sum is σ = 179663298048. Its totient is φ = 143243613600.

The previous prime is 161126825593. The next prime is 161126825669. The reversal of 161126825651 is 156528621161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161126825651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161126821651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498656 + ... + 755586.

It is an arithmetic number, because the mean of its divisors is an integer number (11228956128).

Almost surely, 2^161126825651 is an apocalyptic number.

161126825651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

161126825651 is a deficient number, since it is larger than the sum of its proper divisors (18536472397).

161126825651 is a wasteful number, since it uses less digits than its factorization.

161126825651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258202.

The product of its digits is 172800, while the sum is 44.

The spelling of 161126825651 in words is "one hundred sixty-one billion, one hundred twenty-six million, eight hundred twenty-five thousand, six hundred fifty-one".