20156836214 has 4 divisors (see below), whose sum is σ = 30235254324. Its totient is φ = 10078418106.

The previous prime is 20156836211. The next prime is 20156836243. The reversal of 20156836214 is 41263865102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41263865102 = 2 ⋅20631932551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20156836211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5039209052 + ... + 5039209055.

It is an arithmetic number, because the mean of its divisors is an integer number (7558813581).

Almost surely, 2^20156836214 is an apocalyptic number.

20156836214 is a deficient number, since it is larger than the sum of its proper divisors (10078418110).

20156836214 is a wasteful number, since it uses less digits than its factorization.

20156836214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10078418109.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 20156836214 in words is "twenty billion, one hundred fifty-six million, eight hundred thirty-six thousand, two hundred fourteen".