100143661421 has 8 divisors (see below), whose sum is σ = 109454932224. Its totient is φ = 91212442560.

The previous prime is 100143661411. The next prime is 100143661463. The reversal of 100143661421 is 124166341001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100143661421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100143661411) 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, 95012435 + ... + 95013488.

It is an arithmetic number, because the mean of its divisors is an integer number (13681866528).

Almost surely, 2^100143661421 is an apocalyptic number.

It is an amenable number.

100143661421 is a deficient number, since it is larger than the sum of its proper divisors (9311270803).

100143661421 is a wasteful number, since it uses less digits than its factorization.

100143661421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190025971.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 100143661421 in words is "one hundred billion, one hundred forty-three million, six hundred sixty-one thousand, four hundred twenty-one".