20682342478 has 48 divisors (see below), whose sum is σ = 37292949504. Its totient is φ = 8568670320.

The previous prime is 20682342469. The next prime is 20682342503. The reversal of 20682342478 is 87424328602.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3299175 + ... + 3305437.

It is an arithmetic number, because the mean of its divisors is an integer number (776936448).

Almost surely, 2^20682342478 is an apocalyptic number.

20682342478 is a deficient number, since it is larger than the sum of its proper divisors (16610607026).

20682342478 is a wasteful number, since it uses less digits than its factorization.

20682342478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7397 (or 7390 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 46.

The spelling of 20682342478 in words is "twenty billion, six hundred eighty-two million, three hundred forty-two thousand, four hundred seventy-eight".