20207145464 has 16 divisors (see below), whose sum is σ = 41332797720. Its totient is φ = 9185066080.

The previous prime is 20207145461. The next prime is 20207145473. The reversal of 20207145464 is 46454170202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20207145461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114813239 + ... + 114813414.

Almost surely, 2^20207145464 is an apocalyptic number.

It is an amenable number.

20207145464 is an abundant number, since it is smaller than the sum of its proper divisors (21125652256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20207145464 is a wasteful number, since it uses less digits than its factorization.

20207145464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229626670 (or 229626666 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 20207145464 in words is "twenty billion, two hundred seven million, one hundred forty-five thousand, four hundred sixty-four".