1138618705558 has 4 divisors (see below), whose sum is σ = 1707928058340. Its totient is φ = 569309352778.

The previous prime is 1138618705547. The next prime is 1138618705597. The reversal of 1138618705558 is 8555078168311.

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

It is a super-3 number, since 3×1138618705558³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284654676388 + ... + 284654676391.

It is an arithmetic number, because the mean of its divisors is an integer number (426982014585).

Almost surely, 2^{1138618705558} is an apocalyptic number.

1138618705558 is a deficient number, since it is larger than the sum of its proper divisors (569309352782).

1138618705558 is an equidigital number, since it uses as much as digits as its factorization.

1138618705558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569309352781.

The product of its (nonzero) digits is 8064000, while the sum is 58.

The spelling of 1138618705558 in words is "one trillion, one hundred thirty-eight billion, six hundred eighteen million, seven hundred five thousand, five hundred fifty-eight".