100661250542 has 4 divisors (see below), whose sum is σ = 150991875816. Its totient is φ = 50330625270.

The previous prime is 100661250539. The next prime is 100661250563. The reversal of 100661250542 is 245052166001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245052166001 = 47059 ⋅5207339.

It is a junction number, because it is equal to n+sod(n) for n = 100661250499 and 100661250508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25165312634 + ... + 25165312637.

It is an arithmetic number, because the mean of its divisors is an integer number (37747968954).

Almost surely, 2^100661250542 is an apocalyptic number.

100661250542 is a deficient number, since it is larger than the sum of its proper divisors (50330625274).

100661250542 is an equidigital number, since it uses as much as digits as its factorization.

100661250542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50330625273.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 100661250542 in words is "one hundred billion, six hundred sixty-one million, two hundred fifty thousand, five hundred forty-two".