161445246327620 has 48 divisors (see below), whose sum is σ = 352997675046576. Its totient is φ = 61970186496000.

The previous prime is 161445246327577. The next prime is 161445246327667. The reversal of 161445246327620 is 26723642544161.

161445246327620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 88885072140544 + 72560174187076 = 9427888^2 + 8518226^2 .

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, 1613756921 + ... + 1613856960.

It is an arithmetic number, because the mean of its divisors is an integer number (7354118230137).

Almost surely, 2^{161445246327620} is an apocalyptic number.

161445246327620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161445246327620 is an abundant number, since it is smaller than the sum of its proper divisors (191552428718956).

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

161445246327620 is a wasteful number, since it uses less digits than its factorization.

161445246327620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227613992 (or 3227613990 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 161445246327620 in words is "one hundred sixty-one trillion, four hundred forty-five billion, two hundred forty-six million, three hundred twenty-seven thousand, six hundred twenty".