21619126801 has 8 divisors (see below), whose sum is σ = 22758653600. Its totient is φ = 20479767840.

The previous prime is 21619126777. The next prime is 21619126843. The reversal of 21619126801 is 10862191612.

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 21619126801 - 2¹⁹ = 21618602513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21619126601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289765 + ... + 356653.

It is an arithmetic number, because the mean of its divisors is an integer number (2844831700).

Almost surely, 2^21619126801 is an apocalyptic number.

It is an amenable number.

21619126801 is a deficient number, since it is larger than the sum of its proper divisors (1139526799).

21619126801 is a wasteful number, since it uses less digits than its factorization.

21619126801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83919.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 21619126801 in words is "twenty-one billion, six hundred nineteen million, one hundred twenty-six thousand, eight hundred one".