161537077810 has 16 divisors (see below), whose sum is σ = 294862047552. Its totient is φ = 63704762800.

The previous prime is 161537077781. The next prime is 161537077811. The reversal of 161537077810 is 18770735161.

It is a super-2 number, since 2×161537077810² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161537077811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113757796 + ... + 113759215.

It is an arithmetic number, because the mean of its divisors is an integer number (18428877972).

Almost surely, 2^161537077810 is an apocalyptic number.

161537077810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161537077810 is a deficient number, since it is larger than the sum of its proper divisors (133324969742).

161537077810 is a wasteful number, since it uses less digits than its factorization.

161537077810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227517089.

The product of its (nonzero) digits is 246960, while the sum is 46.

The spelling of 161537077810 in words is "one hundred sixty-one billion, five hundred thirty-seven million, seventy-seven thousand, eight hundred ten".