21467745126345 has 64 divisors (see below), whose sum is σ = 39570583117824. Its totient is φ = 9735066082560.

The previous prime is 21467745126319. The next prime is 21467745126371. The reversal of 21467745126345 is 54362154776412.

It is an interprime number because it is at equal distance from previous prime (21467745126319) and next prime (21467745126371).

It is not a de Polignac number, because 21467745126345 - 2⁵ = 21467745126313 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34672099 + ... + 35285831.

It is an arithmetic number, because the mean of its divisors is an integer number (618290361216).

Almost surely, 2^{21467745126345} is an apocalyptic number.

It is an amenable number.

21467745126345 is a deficient number, since it is larger than the sum of its proper divisors (18102837991479).

21467745126345 is a wasteful number, since it uses less digits than its factorization.

21467745126345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616422.

The product of its digits is 33868800, while the sum is 57.

The spelling of 21467745126345 in words is "twenty-one trillion, four hundred sixty-seven billion, seven hundred forty-five million, one hundred twenty-six thousand, three hundred forty-five".