2157676066767 has 16 divisors (see below), whose sum is σ = 3104980991840. Its totient is φ = 1324895173632.

The previous prime is 2157676066751. The next prime is 2157676066873. The reversal of 2157676066767 is 7676606767512.

It is not a de Polignac number, because 2157676066767 - 2⁴ = 2157676066751 is a prime.

It is a super-2 number, since 2×2157676066767² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2157676066698 and 2157676066707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157678066767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60512842 + ... + 60548487.

It is an arithmetic number, because the mean of its divisors is an integer number (194061311990).

Almost surely, 2^{2157676066767} is an apocalyptic number.

2157676066767 is a deficient number, since it is larger than the sum of its proper divisors (947304925073).

2157676066767 is a wasteful number, since it uses less digits than its factorization.

2157676066767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121061802.

The product of its (nonzero) digits is 186701760, while the sum is 66.

The spelling of 2157676066767 in words is "two trillion, one hundred fifty-seven billion, six hundred seventy-six million, sixty-six thousand, seven hundred sixty-seven".