1077778544 has 10 divisors (see below), whose sum is σ = 2088195960. Its totient is φ = 538889264.

The previous prime is 1077778501. The next prime is 1077778567. The reversal of 1077778544 is 4458777701.

It is a junction number, because it is equal to n+sod(n) for n = 1077778492 and 1077778501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33680564 + ... + 33680595.

It is an arithmetic number, because the mean of its divisors is an integer number (208819596).

Almost surely, 2^1077778544 is an apocalyptic number.

It is an amenable number.

1077778544 is a deficient number, since it is larger than the sum of its proper divisors (1010417416).

1077778544 is an equidigital number, since it uses as much as digits as its factorization.

1077778544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67361167 (or 67361161 counting only the distinct ones).

The product of its (nonzero) digits is 1536640, while the sum is 50.

The square root of 1077778544 is about 32829.5376756969. The cubic root of 1077778544 is about 1025.2816339721.

The spelling of 1077778544 in words is "one billion, seventy-seven million, seven hundred seventy-eight thousand, five hundred forty-four".