1161278100634 has 8 divisors (see below), whose sum is σ = 1747086045588. Its totient is φ = 578916085440.

The previous prime is 1161278100629. The next prime is 1161278100637. The reversal of 1161278100634 is 4360018721611.

It can be written as a sum of positive squares in 2 ways, for example, as 1105961412609 + 55316688025 = 1051647^2 + 235195^2 .

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

It is a super-2 number, since 2×1161278100634² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1161278100637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861481597 + ... + 861482944.

Almost surely, 2^{1161278100634} is an apocalyptic number.

1161278100634 is a deficient number, since it is larger than the sum of its proper divisors (585807944954).

1161278100634 is a wasteful number, since it uses less digits than its factorization.

1161278100634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722964880.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 1161278100634 in words is "one trillion, one hundred sixty-one billion, two hundred seventy-eight million, one hundred thousand, six hundred thirty-four".