64902555782 has 4 divisors (see below), whose sum is σ = 97353833676. Its totient is φ = 32451277890.

The previous prime is 64902555779. The next prime is 64902555793. The reversal of 64902555782 is 28755520946.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16225638944 + ... + 16225638947.

It is an arithmetic number, because the mean of its divisors is an integer number (24338458419).

Almost surely, 2^64902555782 is an apocalyptic number.

64902555782 is a deficient number, since it is larger than the sum of its proper divisors (32451277894).

64902555782 is a wasteful number, since it uses less digits than its factorization.

64902555782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32451277893.

The product of its (nonzero) digits is 6048000, while the sum is 53.

The spelling of 64902555782 in words is "sixty-four billion, nine hundred two million, five hundred fifty-five thousand, seven hundred eighty-two".