436561161645642 has 64 divisors (see below), whose sum is σ = 953781216943104. Its totient is φ = 132112974563840.

The previous prime is 436561161645577. The next prime is 436561161645643. The reversal of 436561161645642 is 246546161165634.

It is not an unprimeable number, because it can be changed into a prime (436561161645643) 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, 265370458 + ... + 267010490.

It is an arithmetic number, because the mean of its divisors is an integer number (14902831514736).

Almost surely, 2^{436561161645642} is an apocalyptic number.

436561161645642 is an abundant number, since it is smaller than the sum of its proper divisors (517220055297462).

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

436561161645642 is a wasteful number, since it uses less digits than its factorization.

436561161645642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645483.

The product of its digits is 74649600, while the sum is 60.

The spelling of 436561161645642 in words is "four hundred thirty-six trillion, five hundred sixty-one billion, one hundred sixty-one million, six hundred forty-five thousand, six hundred forty-two".