100561661354 has 16 divisors (see below), whose sum is σ = 188063366976. Its totient is φ = 39179868000.

The previous prime is 100561661351. The next prime is 100561661359. The reversal of 100561661354 is 453166165001.

It is a super-2 number, since 2×100561661354² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100561661351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326498747 + ... + 326499054.

It is an arithmetic number, because the mean of its divisors is an integer number (11753960436).

Almost surely, 2^100561661354 is an apocalyptic number.

100561661354 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

100561661354 is a deficient number, since it is larger than the sum of its proper divisors (87501705622).

100561661354 is a wasteful number, since it uses less digits than its factorization.

100561661354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652997821.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 100561661354 in words is "one hundred billion, five hundred sixty-one million, six hundred sixty-one thousand, three hundred fifty-four".