2157666860082 has 16 divisors (see below), whose sum is σ = 4317026702400. Its totient is φ = 718940122992.

The previous prime is 2157666860077. The next prime is 2157666860101. The reversal of 2157666860082 is 2800686667512.

It is a super-2 number, since 2×2157666860082² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70524358 + ... + 70554945.

It is an arithmetic number, because the mean of its divisors is an integer number (269814168900).

Almost surely, 2^{2157666860082} is an apocalyptic number.

2157666860082 is an abundant number, since it is smaller than the sum of its proper divisors (2159359842318).

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

2157666860082 is a wasteful number, since it uses less digits than its factorization.

2157666860082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141081857.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 2157666860082 in words is "two trillion, one hundred fifty-seven billion, six hundred sixty-six million, eight hundred sixty thousand, eighty-two".