21467157553361 has 8 divisors (see below), whose sum is σ = 23126306217000. Its totient is φ = 19809127297152.

The previous prime is 21467157553351. The next prime is 21467157553363. The reversal of 21467157553361 is 16335575176412.

It can be written as a sum of positive squares in 4 ways, for example, as 570373863361 + 20896783690000 = 755231^2 + 4571300^2 .

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 21467157553361 - 2⁴² = 17069111042257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21467157553297 and 21467157553306.

It is not an unprimeable number, because it can be changed into a prime (21467157553363) 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, 279561986 + ... + 279638763.

It is an arithmetic number, because the mean of its divisors is an integer number (2890788277125).

Almost surely, 2^{21467157553361} is an apocalyptic number.

It is an amenable number.

21467157553361 is a deficient number, since it is larger than the sum of its proper divisors (1659148663639).

21467157553361 is a wasteful number, since it uses less digits than its factorization.

21467157553361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559203715.

The product of its digits is 15876000, while the sum is 56.

The spelling of 21467157553361 in words is "twenty-one trillion, four hundred sixty-seven billion, one hundred fifty-seven million, five hundred fifty-three thousand, three hundred sixty-one".