161606511011136 has 56 divisors (see below), whose sum is σ = 428332727446624. Its totient is φ = 53774495746560.

The previous prime is 161606511011119. The next prime is 161606511011233. The reversal of 161606511011136 is 631110115606161.

161606511011136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161606511011136² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161606511011094 and 161606511011103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736931155 + ... + 737150418.

It is an arithmetic number, because the mean of its divisors is an integer number (7648798704404).

Almost surely, 2^{161606511011136} is an apocalyptic number.

161606511011136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161606511011136 is an abundant number, since it is smaller than the sum of its proper divisors (266726216435488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161606511011136 is a wasteful number, since it uses less digits than its factorization.

161606511011136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474082159 (or 1474082149 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

Adding to 161606511011136 its reverse (631110115606161), we get a palindrome (792716626617297).

The spelling of 161606511011136 in words is "one hundred sixty-one trillion, six hundred six billion, five hundred eleven million, eleven thousand, one hundred thirty-six".