2687072757921 has 12 divisors (see below), whose sum is σ = 3881426412240. Its totient is φ = 1791336102360.

The previous prime is 2687072757893. The next prime is 2687072757937. The reversal of 2687072757921 is 1297572707862.

It is not a de Polignac number, because 2687072757921 - 2¹³ = 2687072749729 is a prime.

It is a super-2 number, since 2×2687072757921² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2687072757121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3437331 + ... + 4146008.

It is an arithmetic number, because the mean of its divisors is an integer number (323452201020).

Almost surely, 2^{2687072757921} is an apocalyptic number.

It is an amenable number.

2687072757921 is a deficient number, since it is larger than the sum of its proper divisors (1194353654319).

2687072757921 is a wasteful number, since it uses less digits than its factorization.

2687072757921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7622716 (or 7622713 counting only the distinct ones).

The product of its (nonzero) digits is 41489280, while the sum is 63.

The spelling of 2687072757921 in words is "two trillion, six hundred eighty-seven billion, seventy-two million, seven hundred fifty-seven thousand, nine hundred twenty-one".