5577761958978 has 16 divisors (see below), whose sum is σ = 12169662456096. Its totient is φ = 1690230896640.

The previous prime is 5577761958953. The next prime is 5577761959001. The reversal of 5577761958978 is 8798591677755.

It is a super-2 number, since 2×5577761958978² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5577761958978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42255772351 + ... + 42255772482.

It is an arithmetic number, because the mean of its divisors is an integer number (760603903506).

Almost surely, 2^{5577761958978} is an apocalyptic number.

5577761958978 is an abundant number, since it is smaller than the sum of its proper divisors (6591900497118).

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

5577761958978 is a wasteful number, since it uses less digits than its factorization.

5577761958978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84511544849.

The product of its digits is 9335088000, while the sum is 84.

The spelling of 5577761958978 in words is "five trillion, five hundred seventy-seven billion, seven hundred sixty-one million, nine hundred fifty-eight thousand, nine hundred seventy-eight".