13771379477536 has 24 divisors (see below), whose sum is σ = 27115501396284. Its totient is φ = 6884902932480.

The previous prime is 13771379477521. The next prime is 13771379477539. The reversal of 13771379477536 is 63577497317731.

It can be written as a sum of positive squares in 2 ways, for example, as 12527663829136 + 1243715648400 = 3539444^2 + 1115220^2 .

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13771379477539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24303225 + ... + 24863416.

Almost surely, 2^{13771379477536} is an apocalyptic number.

13771379477536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13771379477536 is a deficient number, since it is larger than the sum of its proper divisors (13344121918748).

13771379477536 is an equidigital number, since it uses as much as digits as its factorization.

13771379477536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49175404 (or 49175396 counting only the distinct ones).

The product of its digits is 490092120, while the sum is 70.

The spelling of 13771379477536 in words is "thirteen trillion, seven hundred seventy-one billion, three hundred seventy-nine million, four hundred seventy-seven thousand, five hundred thirty-six".