20858655374 has 8 divisors (see below), whose sum is σ = 31329099648. Its totient is φ = 10415622160.

The previous prime is 20858655371. The next prime is 20858655437. The reversal of 20858655374 is 47355685802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20858655374² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20858655371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6850862 + ... + 6853905.

It is an arithmetic number, because the mean of its divisors is an integer number (3916137456).

Almost surely, 2^20858655374 is an apocalyptic number.

20858655374 is a deficient number, since it is larger than the sum of its proper divisors (10470444274).

20858655374 is a wasteful number, since it uses less digits than its factorization.

20858655374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13705530.

The product of its (nonzero) digits is 8064000, while the sum is 53.

The spelling of 20858655374 in words is "twenty billion, eight hundred fifty-eight million, six hundred fifty-five thousand, three hundred seventy-four".