161371700535 has 64 divisors (see below), whose sum is σ = 271835182080. Its totient is φ = 81651870720.

The previous prime is 161371700533. The next prime is 161371700549. The reversal of 161371700535 is 535007173161.

It is not a de Polignac number, because 161371700535 - 2¹ = 161371700533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161371700493 and 161371700502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161371700533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6042582 + ... + 6069228.

It is an arithmetic number, because the mean of its divisors is an integer number (4247424720).

Almost surely, 2^161371700535 is an apocalyptic number.

161371700535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161371700535 is a deficient number, since it is larger than the sum of its proper divisors (110463481545).

161371700535 is a wasteful number, since it uses less digits than its factorization.

161371700535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26968.

The product of its (nonzero) digits is 66150, while the sum is 39.

Adding to 161371700535 its reverse (535007173161), we get a palindrome (696378873696).

The spelling of 161371700535 in words is "one hundred sixty-one billion, three hundred seventy-one million, seven hundred thousand, five hundred thirty-five".