20266464442 has 16 divisors (see below), whose sum is σ = 35312061312. Its totient is φ = 8543239920.

The previous prime is 20266464419. The next prime is 20266464443. The reversal of 20266464442 is 24446466202.

It is a junction number, because it is equal to n+sod(n) for n = 20266464395 and 20266464404.

It is not an unprimeable number, because it can be changed into a prime (20266464443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11864758 + ... + 11866465.

It is an arithmetic number, because the mean of its divisors is an integer number (2207003832).

Almost surely, 2^20266464442 is an apocalyptic number.

20266464442 is a deficient number, since it is larger than the sum of its proper divisors (15045596870).

20266464442 is a wasteful number, since it uses less digits than its factorization.

20266464442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23731293.

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 20266464442 in words is "twenty billion, two hundred sixty-six million, four hundred sixty-four thousand, four hundred forty-two".