100401194056 has 32 divisors (see below), whose sum is σ = 193959343800. Its totient is φ = 48699988480.

The previous prime is 100401193873. The next prime is 100401194057. The reversal of 100401194056 is 650491104001.

It can be written as a sum of positive squares in 4 ways, for example, as 99609672100 + 791521956 = 315610^2 + 28134^2 .

It is a super-2 number, since 2×100401194056² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100401194057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1292575 + ... + 1368046.

Almost surely, 2^100401194056 is an apocalyptic number.

It is an amenable number.

100401194056 is a deficient number, since it is larger than the sum of its proper divisors (93558149744).

100401194056 is a wasteful number, since it uses less digits than its factorization.

100401194056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660769 (or 2660765 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 100401194056 its reverse (650491104001), we get a palindrome (750892298057).

The spelling of 100401194056 in words is "one hundred billion, four hundred one million, one hundred ninety-four thousand, fifty-six".