20461564526 has 16 divisors (see below), whose sum is σ = 33098420544. Its totient is φ = 9430906464.

The previous prime is 20461564507. The next prime is 20461564537. The reversal of 20461564526 is 62546516402.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517766 + ... + 555881.

It is an arithmetic number, because the mean of its divisors is an integer number (2068651284).

Almost surely, 2^20461564526 is an apocalyptic number.

20461564526 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20461564526 is a deficient number, since it is larger than the sum of its proper divisors (12636856018).

20461564526 is a wasteful number, since it uses less digits than its factorization.

20461564526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074395.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 20461564526 in words is "twenty billion, four hundred sixty-one million, five hundred sixty-four thousand, five hundred twenty-six".