161211501425336 has 64 divisors (see below), whose sum is σ = 325303974391680. Its totient is φ = 74619419719680.

The previous prime is 161211501425327. The next prime is 161211501425407. The reversal of 161211501425336 is 633524105112161.

It is a super-2 number, since 2×161211501425336² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161211501425293 and 161211501425302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807706625 + ... + 807906191.

It is an arithmetic number, because the mean of its divisors is an integer number (5082874599870).

Almost surely, 2^{161211501425336} is an apocalyptic number.

It is an amenable number.

161211501425336 is an abundant number, since it is smaller than the sum of its proper divisors (164092472966344).

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

161211501425336 is a wasteful number, since it uses less digits than its factorization.

161211501425336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297024 (or 297020 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

Adding to 161211501425336 its reverse (633524105112161), we get a palindrome (794735606537497).

The spelling of 161211501425336 in words is "one hundred sixty-one trillion, two hundred eleven billion, five hundred one million, four hundred twenty-five thousand, three hundred thirty-six".