2157527608766 has 4 divisors (see below), whose sum is σ = 3236291413152. Its totient is φ = 1078763804382.

The previous prime is 2157527608759. The next prime is 2157527608771. The reversal of 2157527608766 is 6678067257512.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2157527608699 and 2157527608708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539381902190 + ... + 539381902193.

It is an arithmetic number, because the mean of its divisors is an integer number (809072853288).

Almost surely, 2^{2157527608766} is an apocalyptic number.

2157527608766 is a deficient number, since it is larger than the sum of its proper divisors (1078763804386).

2157527608766 is a wasteful number, since it uses less digits than its factorization.

2157527608766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078763804385.

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 2157527608766 in words is "two trillion, one hundred fifty-seven billion, five hundred twenty-seven million, six hundred eight thousand, seven hundred sixty-six".