77775252652 has 24 divisors (see below), whose sum is σ = 143327368800. Its totient is φ = 36855599616.

The previous prime is 77775252647. The next prime is 77775252661. The reversal of 77775252652 is 25625257777.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77775252593 and 77775252602.

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, 3867877 + ... + 3887932.

It is an arithmetic number, because the mean of its divisors is an integer number (5971973700).

Almost surely, 2^77775252652 is an apocalyptic number.

It is an amenable number.

77775252652 is a deficient number, since it is larger than the sum of its proper divisors (65552116148).

77775252652 is a wasteful number, since it uses less digits than its factorization.

77775252652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755945 (or 7755943 counting only the distinct ones).

The product of its digits is 14406000, while the sum is 55.

The spelling of 77775252652 in words is "seventy-seven billion, seven hundred seventy-five million, two hundred fifty-two thousand, six hundred fifty-two".