2662778542 has 16 divisors (see below), whose sum is σ = 4139079552. Its totient is φ = 1283420160.

The previous prime is 2662778513. The next prime is 2662778543. The reversal of 2662778542 is 2458772662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2662778543) 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 7 ways as a sum of consecutive naturals, for example, 67623 + ... + 99490.

It is an arithmetic number, because the mean of its divisors is an integer number (258692472).

Almost surely, 2^2662778542 is an apocalyptic number.

2662778542 is a deficient number, since it is larger than the sum of its proper divisors (1476301010).

2662778542 is a wasteful number, since it uses less digits than its factorization.

2662778542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167403.

The product of its digits is 2257920, while the sum is 49.

The square root of 2662778542 is about 51602.1176115864. The cubic root of 2662778542 is about 1386.0482521079.

The spelling of 2662778542 in words is "two billion, six hundred sixty-two million, seven hundred seventy-eight thousand, five hundred forty-two".