1361038605558 has 32 divisors (see below), whose sum is σ = 2868551476992. Its totient is φ = 429657756000.

The previous prime is 1361038605551. The next prime is 1361038605569. The reversal of 1361038605558 is 8555068301631.

It is a super-3 number, since 3×1361038605558³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1361038605558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361038605551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48810808 + ... + 48838683.

It is an arithmetic number, because the mean of its divisors is an integer number (89642233656).

Almost surely, 2^{1361038605558} is an apocalyptic number.

1361038605558 is an abundant number, since it is smaller than the sum of its proper divisors (1507512871434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361038605558 is a wasteful number, since it uses less digits than its factorization.

1361038605558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97649620.

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 1361038605558 in words is "one trillion, three hundred sixty-one billion, thirty-eight million, six hundred five thousand, five hundred fifty-eight".