1385166971558 has 8 divisors (see below), whose sum is σ = 2078044902552. Its totient is φ = 692485337376.

The previous prime is 1385166971471. The next prime is 1385166971627. The reversal of 1385166971558 is 8551796615831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1385166971558² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1385166971494 and 1385166971503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49056560 + ... + 49084787.

It is an arithmetic number, because the mean of its divisors is an integer number (259755612819).

Almost surely, 2^{1385166971558} is an apocalyptic number.

1385166971558 is a deficient number, since it is larger than the sum of its proper divisors (692877930994).

1385166971558 is an equidigital number, since it uses as much as digits as its factorization.

1385166971558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98148406.

The product of its digits is 54432000, while the sum is 65.

The spelling of 1385166971558 in words is "one trillion, three hundred eighty-five billion, one hundred sixty-six million, nine hundred seventy-one thousand, five hundred fifty-eight".