1216477506337 has 8 divisors (see below), whose sum is σ = 1221472647720. Its totient is φ = 1211491944960.

The previous prime is 1216477506319. The next prime is 1216477506367. The reversal of 1216477506337 is 7336057746121.

It can be written as a sum of positive squares in 4 ways, for example, as 130096554721 + 1086380951616 = 360689^2 + 1042296^2 .

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 1216477506337 - 2²³ = 1216469117729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1216477506367) 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, 2140464 + ... + 2648497.

It is an arithmetic number, because the mean of its divisors is an integer number (152684080965).

Almost surely, 2^{1216477506337} is an apocalyptic number.

It is an amenable number.

1216477506337 is a deficient number, since it is larger than the sum of its proper divisors (4995141383).

1216477506337 is an equidigital number, since it uses as much as digits as its factorization.

1216477506337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790003.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 1216477506337 in words is "one trillion, two hundred sixteen billion, four hundred seventy-seven million, five hundred six thousand, three hundred thirty-seven".