77775252650 has 48 divisors (see below), whose sum is σ = 152450242560. Its totient is φ = 29438956800.

The previous prime is 77775252647. The next prime is 77775252661. The reversal of 77775252650 is 5625257777.

It is a junction number, because it is equal to n+sod(n) for n = 77775252592 and 77775252601.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 790487 + ... + 883413.

It is an arithmetic number, because the mean of its divisors is an integer number (3176046720).

Almost surely, 2^77775252650 is an apocalyptic number.

77775252650 is a deficient number, since it is larger than the sum of its proper divisors (74674989910).

77775252650 is a wasteful number, since it uses less digits than its factorization.

77775252650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93839 (or 93834 counting only the distinct ones).

The product of its (nonzero) digits is 7203000, while the sum is 53.

The spelling of 77775252650 in words is "seventy-seven billion, seven hundred seventy-five million, two hundred fifty-two thousand, six hundred fifty".