2157890488576 has 27 divisors (see below), whose sum is σ = 4307398633363. Its totient is φ = 1078933492480.

The previous prime is 2157890488573. The next prime is 2157890488583. The reversal of 2157890488576 is 6758840987512.

It is a happy number.

The square root of 2157890488576 is 1468976.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157890488573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23457711 + ... + 23549521.

Almost surely, 2^{2157890488576} is an apocalyptic number.

2157890488576 is the 1468976-th square number.

It is an amenable number.

2157890488576 is a deficient number, since it is larger than the sum of its proper divisors (2149508144787).

2157890488576 is an frugal number, since it uses more digits than its factorization.

2157890488576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183638 (or 91813 counting only the distinct ones).

The product of its (nonzero) digits is 270950400, while the sum is 70.

The spelling of 2157890488576 in words is "two trillion, one hundred fifty-seven billion, eight hundred ninety million, four hundred eighty-eight thousand, five hundred seventy-six".