64748266776 has 24 divisors (see below), whose sum is σ = 175359889380. Its totient is φ = 21582755568.

The previous prime is 64748266771. The next prime is 64748266789. The reversal of 64748266776 is 67766284746.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64748266771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 449640670 + ... + 449640813.

Almost surely, 2^64748266776 is an apocalyptic number.

It is an amenable number.

64748266776 is an abundant number, since it is smaller than the sum of its proper divisors (110611622604).

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

64748266776 is a wasteful number, since it uses less digits than its factorization.

64748266776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899281495 (or 899281488 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 63.

The spelling of 64748266776 in words is "sixty-four billion, seven hundred forty-eight million, two hundred sixty-six thousand, seven hundred seventy-six".