21077302994648 has 32 divisors (see below), whose sum is σ = 39612667239360. Its totient is φ = 10513926339840.

The previous prime is 21077302994647. The next prime is 21077302994707. The reversal of 21077302994648 is 84649920377012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21077302994647) 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, 224186786 + ... + 224280782.

It is an arithmetic number, because the mean of its divisors is an integer number (1237895851230).

Almost surely, 2^{21077302994648} is an apocalyptic number.

It is an amenable number.

21077302994648 is a deficient number, since it is larger than the sum of its proper divisors (18535364244712).

21077302994648 is a wasteful number, since it uses less digits than its factorization.

21077302994648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159467 (or 159463 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 21077302994648 in words is "twenty-one trillion, seventy-seven billion, three hundred two million, nine hundred ninety-four thousand, six hundred forty-eight".