328177505545531 has 8 divisors (see below), whose sum is σ = 335066419390640. Its totient is φ = 321353276337792.

The previous prime is 328177505545489. The next prime is 328177505545537. The reversal of 328177505545531 is 135545505771823.

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

It is a cyclic number.

It is not a de Polignac number, because 328177505545531 - 2⁷ = 328177505545403 is a prime.

It is a super-2 number, since 2×328177505545531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328177505545531.

It is not an unprimeable number, because it can be changed into a prime (328177505545537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16171149090 + ... + 16171169383.

It is an arithmetic number, because the mean of its divisors is an integer number (41883302423830).

Almost surely, 2^{328177505545531} is an apocalyptic number.

328177505545531 is a deficient number, since it is larger than the sum of its proper divisors (6888913845109).

328177505545531 is a wasteful number, since it uses less digits than its factorization.

328177505545531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32342318685.

The product of its (nonzero) digits is 88200000, while the sum is 61.

The spelling of 328177505545531 in words is "three hundred twenty-eight trillion, one hundred seventy-seven billion, five hundred five million, five hundred forty-five thousand, five hundred thirty-one".