105671151621556 has 24 divisors (see below), whose sum is σ = 186986298993480. Its totient is φ = 52247788032000.

The previous prime is 105671151621533. The next prime is 105671151621577. The reversal of 105671151621556 is 655126151176501.

It can be written as a sum of positive squares in 4 ways, for example, as 86338773761956 + 19332377859600 = 9291866^2 + 4396860^2 .

It is a super-2 number, since 2×105671151621556² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161330925 + ... + 161984596.

It is an arithmetic number, because the mean of its divisors is an integer number (7791095791395).

Almost surely, 2^{105671151621556} is an apocalyptic number.

It is an amenable number.

105671151621556 is a deficient number, since it is larger than the sum of its proper divisors (81315147371924).

105671151621556 is a wasteful number, since it uses less digits than its factorization.

105671151621556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323316435 (or 323316433 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 52.

The spelling of 105671151621556 in words is "one hundred five trillion, six hundred seventy-one billion, one hundred fifty-one million, six hundred twenty-one thousand, five hundred fifty-six".