1328429457536 has 16 divisors (see below), whose sum is σ = 2646480560190. Its totient is φ = 664214728704.

The previous prime is 1328429457517. The next prime is 1328429457547. The reversal of 1328429457536 is 6357549248231.

It can be written as a sum of positive squares in only one way, i.e., 761179471936 + 567249985600 = 872456^2 + 753160^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5189177441 + ... + 5189177696.

Almost surely, 2^{1328429457536} is an apocalyptic number.

1328429457536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1328429457536 is a deficient number, since it is larger than the sum of its proper divisors (1318051102654).

1328429457536 is an equidigital number, since it uses as much as digits as its factorization.

1328429457536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10378355151 (or 10378355139 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 59.

The spelling of 1328429457536 in words is "one trillion, three hundred twenty-eight billion, four hundred twenty-nine million, four hundred fifty-seven thousand, five hundred thirty-six".