20678621134 has 8 divisors (see below), whose sum is σ = 31026807000. Its totient is φ = 10336352136.

The previous prime is 20678621099. The next prime is 20678621137. The reversal of 20678621134 is 43112687602.

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

It is a super-2 number, since 2×20678621134² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20678621137) 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, 1470469 + ... + 1484464.

It is an arithmetic number, because the mean of its divisors is an integer number (3878350875).

Almost surely, 2^20678621134 is an apocalyptic number.

20678621134 is a deficient number, since it is larger than the sum of its proper divisors (10348185866).

20678621134 is a wasteful number, since it uses less digits than its factorization.

20678621134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958434.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 20678621134 in words is "twenty billion, six hundred seventy-eight million, six hundred twenty-one thousand, one hundred thirty-four".