20156016110522 has 4 divisors (see below), whose sum is σ = 30234024165786. Its totient is φ = 10078008055260.

The previous prime is 20156016110479. The next prime is 20156016110557. The reversal of 20156016110522 is 22501161065102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12207400100281 + 7948616010241 = 3493909^2 + 2819329^2 .

It is a super-2 number, since 2×20156016110522² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5039004027629 + ... + 5039004027632.

Almost surely, 2^{20156016110522} is an apocalyptic number.

20156016110522 is a deficient number, since it is larger than the sum of its proper divisors (10078008055264).

20156016110522 is a wasteful number, since it uses less digits than its factorization.

20156016110522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10078008055263.

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 20156016110522 its reverse (22501161065102), we get a palindrome (42657177175624).

The spelling of 20156016110522 in words is "twenty trillion, one hundred fifty-six billion, sixteen million, one hundred ten thousand, five hundred twenty-two".