20606011544 has 8 divisors (see below), whose sum is σ = 38636271660. Its totient is φ = 10303005768.

The previous prime is 20606011541. The next prime is 20606011577. The reversal of 20606011544 is 44511060602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20606011544² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20606011541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1287875714 + ... + 1287875729.

Almost surely, 2^20606011544 is an apocalyptic number.

It is an amenable number.

20606011544 is a deficient number, since it is larger than the sum of its proper divisors (18030260116).

20606011544 is a wasteful number, since it uses less digits than its factorization.

20606011544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575751449 (or 2575751445 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 20606011544 in words is "twenty billion, six hundred six million, eleven thousand, five hundred forty-four".