20154737766216 has 16 divisors (see below), whose sum is σ = 50386844415600. Its totient is φ = 6718245922064.

The previous prime is 20154737766077. The next prime is 20154737766217. The reversal of 20154737766216 is 61266773745102.

It is not an unprimeable number, because it can be changed into a prime (20154737766217) 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, 419890370106 + ... + 419890370153.

It is an arithmetic number, because the mean of its divisors is an integer number (3149177775975).

Almost surely, 2^{20154737766216} is an apocalyptic number.

It is an amenable number.

20154737766216 is an abundant number, since it is smaller than the sum of its proper divisors (30232106649384).

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

20154737766216 is a wasteful number, since it uses less digits than its factorization.

20154737766216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839780740268 (or 839780740264 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 57.

The spelling of 20154737766216 in words is "twenty trillion, one hundred fifty-four billion, seven hundred thirty-seven million, seven hundred sixty-six thousand, two hundred sixteen".