21451426601 has 8 divisors (see below), whose sum is σ = 23494792608. Its totient is φ = 19423600000.

The previous prime is 21451426573. The next prime is 21451426603. The reversal of 21451426601 is 10662415412.

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 21451426601 - 2³⁰ = 20377684777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21451426603) 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, 3881960 + ... + 3887481.

It is an arithmetic number, because the mean of its divisors is an integer number (2936849076).

Almost surely, 2^21451426601 is an apocalyptic number.

It is an amenable number.

21451426601 is a deficient number, since it is larger than the sum of its proper divisors (2043366007).

21451426601 is a wasteful number, since it uses less digits than its factorization.

21451426601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7769703.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 21451426601 in words is "twenty-one billion, four hundred fifty-one million, four hundred twenty-six thousand, six hundred one".