20308848693156 has 135 divisors (see below), whose sum is σ = 56036943334449. Its totient is φ = 6412833934272.

The previous prime is 20308848693113. The next prime is 20308848693167. The reversal of 20308848693156 is 65139684880302.

It is a happy number.

The square root of 20308848693156 is 4506534.

It is a perfect power (a square), and thus also a powerful number.

20308848693156 is a `hidden beast` number, since 2 + 0 + 308 + 8 + 4 + 8 + 6 + 9 + 315 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13104906804900 + 7203941888256 = 3620070^2 + 2684016^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20308848693093 and 20308848693102.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1541228040 + ... + 1541241216.

Almost surely, 2^{20308848693156} is an apocalyptic number.

20308848693156 is the 4506534-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20308848693156

20308848693156 is an abundant number, since it is smaller than the sum of its proper divisors (35728094641293).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20308848693156 is an frugal number, since it uses more digits than its factorization.

20308848693156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26408 (or 13201 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 20308848693156 in words is "twenty trillion, three hundred eight billion, eight hundred forty-eight million, six hundred ninety-three thousand, one hundred fifty-six".