161026512741 has 6 divisors (see below), whose sum is σ = 232593851750. Its totient is φ = 107351008488.

The previous prime is 161026512739. The next prime is 161026512791. The reversal of 161026512741 is 147215620161.

161026512741 is a `hidden beast` number, since 1 + 610 + 26 + 5 + 12 + 7 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 97587512100 + 63439000641 = 312390^2 + 251871^2 .

It is not a de Polignac number, because 161026512741 - 2¹ = 161026512739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161026512696 and 161026512705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161026512791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8945917366 + ... + 8945917383.

Almost surely, 2^161026512741 is an apocalyptic number.

It is an amenable number.

161026512741 is a deficient number, since it is larger than the sum of its proper divisors (71567339009).

161026512741 is a wasteful number, since it uses less digits than its factorization.

161026512741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17891834755 (or 17891834752 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 161026512741 in words is "one hundred sixty-one billion, twenty-six million, five hundred twelve thousand, seven hundred forty-one".