20157390186480 has 120 divisors (see below), whose sum is σ = 67696193825520. Its totient is φ = 5375227944960.

The previous prime is 20157390186469. The next prime is 20157390186533. The reversal of 20157390186480 is 8468109375102.

20157390186480 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 73 + 90 + 1 + 8 + 6 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66065475 + ... + 66369885.

It is an arithmetic number, because the mean of its divisors is an integer number (564134948546).

It is a 1-persistent number, because it is pandigital, but 2⋅20157390186480 = 40314780372960 is not.

Almost surely, 2^{20157390186480} is an apocalyptic number.

20157390186480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20157390186480 is an abundant number, since it is smaller than the sum of its proper divisors (47538803639040).

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

20157390186480 is a wasteful number, since it uses less digits than its factorization.

20157390186480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396399 (or 396390 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 20157390186480 in words is "twenty trillion, one hundred fifty-seven billion, three hundred ninety million, one hundred eighty-six thousand, four hundred eighty".