105512261101378 has 32 divisors (see below), whose sum is σ = 165191008316400. Its totient is φ = 50481237467136.

The previous prime is 105512261101297. The next prime is 105512261101391. The reversal of 105512261101378 is 873101162215501.

It can be written as a sum of positive squares in 8 ways, for example, as 36637150496769 + 68875110604609 = 6052863^2 + 8299103^2 .

It is a super-2 number, since 2×105512261101378² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66545688 + ... + 68112796.

Almost surely, 2^{105512261101378} is an apocalyptic number.

105512261101378 is a deficient number, since it is larger than the sum of its proper divisors (59678747215022).

105512261101378 is a wasteful number, since it uses less digits than its factorization.

105512261101378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577526.

The product of its (nonzero) digits is 100800, while the sum is 43.

The spelling of 105512261101378 in words is "one hundred five trillion, five hundred twelve billion, two hundred sixty-one million, one hundred one thousand, three hundred seventy-eight".