2773554640 has 40 divisors (see below), whose sum is σ = 6787913760. Its totient is φ = 1051030656.

The previous prime is 2773554629. The next prime is 2773554671. The reversal of 2773554640 is 464553772.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910834 + ... + 913873.

It is an arithmetic number, because the mean of its divisors is an integer number (169697844).

Almost surely, 2^2773554640 is an apocalyptic number.

2773554640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2773554640 is an abundant number, since it is smaller than the sum of its proper divisors (4014359120).

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

2773554640 is a wasteful number, since it uses less digits than its factorization.

2773554640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824739 (or 1824733 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 43.

The square root of 2773554640 is about 52664.5482274366. The cubic root of 2773554640 is about 1405.0083610399.

The spelling of 2773554640 in words is "two billion, seven hundred seventy-three million, five hundred fifty-four thousand, six hundred forty".