2780655043 has 16 divisors (see below), whose sum is σ = 2884137984. Its totient is φ = 2678801760.

The previous prime is 2780655029. The next prime is 2780655047. The reversal of 2780655043 is 3405560872.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2780655043 is a prime.

It is a super-2 number, since 2×2780655043² = 15464084936322663698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2780654987 and 2780655005.

It is not an unprimeable number, because it can be changed into a prime (2780655047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1920946 + ... + 1922392.

It is an arithmetic number, because the mean of its divisors is an integer number (180258624).

Almost surely, 2^2780655043 is an apocalyptic number.

2780655043 is a deficient number, since it is larger than the sum of its proper divisors (103482941).

2780655043 is a wasteful number, since it uses less digits than its factorization.

2780655043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2780655043 is about 52731.9167392956. The cubic root of 2780655043 is about 1406.2062972479.

The spelling of 2780655043 in words is "two billion, seven hundred eighty million, six hundred fifty-five thousand, forty-three".