21467270164325 has 12 divisors (see below), whose sum is σ = 26621330362788. Its totient is φ = 17172580416000.

The previous prime is 21467270164321. The next prime is 21467270164369. The reversal of 21467270164325 is 52346107276412.

It can be written as a sum of positive squares in 6 ways, for example, as 2353297130116 + 19113973034209 = 1534046^2 + 4371953^2 .

It is not a de Polignac number, because 21467270164325 - 2² = 21467270164321 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 (21467270164321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30538412 + ... + 31233461.

It is an arithmetic number, because the mean of its divisors is an integer number (2218444196899).

Almost surely, 2^{21467270164325} is an apocalyptic number.

21467270164325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21467270164325 is a deficient number, since it is larger than the sum of its proper divisors (5154060198463).

21467270164325 is a wasteful number, since it uses less digits than its factorization.

21467270164325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61785784 (or 61785779 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 21467270164325 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred seventy million, one hundred sixty-four thousand, three hundred twenty-five".