20624406527 has 2 divisors, whose sum is σ = 20624406528. Its totient is φ = 20624406526.

The previous prime is 20624406497. The next prime is 20624406581. The reversal of 20624406527 is 72560442602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20624406527 is a prime.

It is a super-2 number, since 2×20624406527² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20624402527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10312203263 + 10312203264.

It is an arithmetic number, because the mean of its divisors is an integer number (10312203264).

Almost surely, 2^20624406527 is an apocalyptic number.

20624406527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20624406527 is an equidigital number, since it uses as much as digits as its factorization.

20624406527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 20624406527 in words is "twenty billion, six hundred twenty-four million, four hundred six thousand, five hundred twenty-seven".