2157975314066 has 32 divisors (see below), whose sum is σ = 3803087163456. Its totient is φ = 905391432000.

The previous prime is 2157975314063. The next prime is 2157975314081. The reversal of 2157975314066 is 6604135797512.

It is a super-2 number, since 2×2157975314066² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2157975314063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4905956 + ... + 5327696.

It is an arithmetic number, because the mean of its divisors is an integer number (118846473858).

Almost surely, 2^{2157975314066} is an apocalyptic number.

2157975314066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2157975314066 is a deficient number, since it is larger than the sum of its proper divisors (1645111849390).

2157975314066 is a wasteful number, since it uses less digits than its factorization.

2157975314066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439658.

The product of its (nonzero) digits is 9525600, while the sum is 56.

The spelling of 2157975314066 in words is "two trillion, one hundred fifty-seven billion, nine hundred seventy-five million, three hundred fourteen thousand, sixty-six".