100634553421 has 8 divisors (see below), whose sum is σ = 106564038264. Its totient is φ = 94706158080.

The previous prime is 100634553419. The next prime is 100634553443. The reversal of 100634553421 is 124355436001.

It can be written as a sum of positive squares in 4 ways, for example, as 56318409225 + 44316144196 = 237315^2 + 210514^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 100634553421 - 2¹ = 100634553419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100634553491) 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, 78240 + ... + 455401.

It is an arithmetic number, because the mean of its divisors is an integer number (13320504783).

Almost surely, 2^100634553421 is an apocalyptic number.

It is an amenable number.

100634553421 is a deficient number, since it is larger than the sum of its proper divisors (5929484843).

100634553421 is a wasteful number, since it uses less digits than its factorization.

100634553421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544751.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 100634553421 its reverse (124355436001), we get a palindrome (224989989422).

The spelling of 100634553421 in words is "one hundred billion, six hundred thirty-four million, five hundred fifty-three thousand, four hundred twenty-one".