2549978877 has 16 divisors (see below), whose sum is σ = 3466006848. Its totient is φ = 1667003520.

The previous prime is 2549978867. The next prime is 2549978917. The reversal of 2549978877 is 7788799452.

It is not a de Polignac number, because 2549978877 - 2¹⁶ = 2549913341 is a prime.

It is a super-2 number, since 2×2549978877² = 13004784546292362258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2549978857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415602 + ... + 421692.

It is an arithmetic number, because the mean of its divisors is an integer number (216625428).

Almost surely, 2^2549978877 is an apocalyptic number.

It is an amenable number.

2549978877 is a deficient number, since it is larger than the sum of its proper divisors (916027971).

2549978877 is a wasteful number, since it uses less digits than its factorization.

2549978877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780.

The product of its digits is 71124480, while the sum is 66.

The square root of 2549978877 is about 50497.3155425118. The cubic root of 2549978877 is about 1366.1934357252.

The spelling of 2549978877 in words is "two billion, five hundred forty-nine million, nine hundred seventy-eight thousand, eight hundred seventy-seven".