20379166858 has 16 divisors (see below), whose sum is σ = 30691435680. Its totient is φ = 10148765616.

The previous prime is 20379166853. The next prime is 20379166861. The reversal of 20379166858 is 85866197302.

It is a junction number, because it is equal to n+sod(n) for n = 20379166799 and 20379166808.

It is not an unprimeable number, because it can be changed into a prime (20379166853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523513 + ... + 561091.

It is an arithmetic number, because the mean of its divisors is an integer number (1918214730).

Almost surely, 2^20379166858 is an apocalyptic number.

20379166858 is a deficient number, since it is larger than the sum of its proper divisors (10312268822).

20379166858 is a wasteful number, since it uses less digits than its factorization.

20379166858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38661.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 20379166858 in words is "twenty billion, three hundred seventy-nine million, one hundred sixty-six thousand, eight hundred fifty-eight".