72377523616161 has 8 divisors (see below), whose sum is σ = 101582489285920. Its totient is φ = 45712120178592.

The previous prime is 72377523616159. The next prime is 72377523616241. The reversal of 72377523616161 is 16161632577327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72377523616161 - 2¹ = 72377523616159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 1269781116073 = 72377523616161 / (7 + 2 + 3 + 7 + 7 + 5 + 2 + 3 + 6 + 1 + 6 + 1 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72377523616141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634890557980 + ... + 634890558093.

It is an arithmetic number, because the mean of its divisors is an integer number (12697811160740).

Almost surely, 2^{72377523616161} is an apocalyptic number.

It is an amenable number.

72377523616161 is a deficient number, since it is larger than the sum of its proper divisors (29204965669759).

72377523616161 is a wasteful number, since it uses less digits than its factorization.

72377523616161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269781116095.

The product of its digits is 13335840, while the sum is 57.

The spelling of 72377523616161 in words is "seventy-two trillion, three hundred seventy-seven billion, five hundred twenty-three million, six hundred sixteen thousand, one hundred sixty-one".