161435312430 has 64 divisors (see below), whose sum is σ = 447178157568. Its totient is φ = 36534153600.

The previous prime is 161435312417. The next prime is 161435312431. The reversal of 161435312430 is 34213534161.

It is a super-2 number, since 2×161435312430² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161435312391 and 161435312400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161435312431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3784432 + ... + 3826851.

It is an arithmetic number, because the mean of its divisors is an integer number (6987158712).

Almost surely, 2^161435312430 is an apocalyptic number.

161435312430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161435312430 is an abundant number, since it is smaller than the sum of its proper divisors (285742845138).

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

161435312430 is a wasteful number, since it uses less digits than its factorization.

161435312430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7611401.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 161435312430 its reverse (34213534161), we get a palindrome (195648846591).

The spelling of 161435312430 in words is "one hundred sixty-one billion, four hundred thirty-five million, three hundred twelve thousand, four hundred thirty".