2691278540832 has 96 divisors (see below), whose sum is σ = 8114408064000. Its totient is φ = 765072684288.

The previous prime is 2691278540777. The next prime is 2691278540921. The reversal of 2691278540832 is 2380458721962.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9928782 + ... + 10196237.

It is an arithmetic number, because the mean of its divisors is an integer number (84525084000).

It is a 1-persistent number, because it is pandigital, but 2⋅2691278540832 = 5382557081664 is not.

Almost surely, 2^{2691278540832} is an apocalyptic number.

It is an amenable number.

2691278540832 is an abundant number, since it is smaller than the sum of its proper divisors (5423129523168).

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

2691278540832 is a wasteful number, since it uses less digits than its factorization.

2691278540832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20125238 (or 20125230 counting only the distinct ones).

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

The spelling of 2691278540832 in words is "two trillion, six hundred ninety-one billion, two hundred seventy-eight million, five hundred forty thousand, eight hundred thirty-two".