1617536620231 has 4 divisors (see below), whose sum is σ = 1848613280272. Its totient is φ = 1386459960192.

The previous prime is 1617536620129. The next prime is 1617536620247. The reversal of 1617536620231 is 1320266357161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1617536620231 - 2¹³ = 1617536612039 is a prime.

It is a super-2 number, since 2×1617536620231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1617536600231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115538330010 + ... + 115538330023.

It is an arithmetic number, because the mean of its divisors is an integer number (462153320068).

Almost surely, 2^{1617536620231} is an apocalyptic number.

1617536620231 is a deficient number, since it is larger than the sum of its proper divisors (231076660041).

1617536620231 is an equidigital number, since it uses as much as digits as its factorization.

1617536620231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231076660040.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 1617536620231 in words is "one trillion, six hundred seventeen billion, five hundred thirty-six million, six hundred twenty thousand, two hundred thirty-one".