21400052467 has 2 divisors, whose sum is σ = 21400052468. Its totient is φ = 21400052466.

The previous prime is 21400052461. The next prime is 21400052473. The reversal of 21400052467 is 76425000412.

It is a balanced prime because it is at equal distance from previous prime (21400052461) and next prime (21400052473).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21400052467 is a prime.

It is not a weakly prime, because it can be changed into another prime (21400052461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10700026233 + 10700026234.

It is an arithmetic number, because the mean of its divisors is an integer number (10700026234).

Almost surely, 2^21400052467 is an apocalyptic number.

21400052467 is a deficient number, since it is larger than the sum of its proper divisors (1).

21400052467 is an equidigital number, since it uses as much as digits as its factorization.

21400052467 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 21400052467 its reverse (76425000412), we get a palindrome (97825052879).

The spelling of 21400052467 in words is "twenty-one billion, four hundred million, fifty-two thousand, four hundred sixty-seven".