20858006377 has 16 divisors (see below), whose sum is σ = 22604883840. Its totient is φ = 19131840000.

The previous prime is 20858006359. The next prime is 20858006419. The reversal of 20858006377 is 77360085802.

It is not a de Polignac number, because 20858006377 - 2²⁷ = 20723788649 is a prime.

It is a super-2 number, since 2×20858006377² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20858006347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425177 + ... + 1439737.

It is an arithmetic number, because the mean of its divisors is an integer number (1412805240).

Almost surely, 2^20858006377 is an apocalyptic number.

It is an amenable number.

20858006377 is a deficient number, since it is larger than the sum of its proper divisors (1746877463).

20858006377 is a wasteful number, since it uses less digits than its factorization.

20858006377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15264.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 20858006377 in words is "twenty billion, eight hundred fifty-eight million, six thousand, three hundred seventy-seven".