20477642764 has 12 divisors (see below), whose sum is σ = 35860447000. Its totient is φ = 10231800768.

The previous prime is 20477642663. The next prime is 20477642771. The reversal of 20477642764 is 46724677402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748589 + ... + 1760260.

Almost surely, 2^20477642764 is an apocalyptic number.

It is an amenable number.

20477642764 is a deficient number, since it is larger than the sum of its proper divisors (15382804236).

20477642764 is a wasteful number, since it uses less digits than its factorization.

20477642764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510312 (or 3510310 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 49.

The spelling of 20477642764 in words is "twenty billion, four hundred seventy-seven million, six hundred forty-two thousand, seven hundred sixty-four".