77764008684725 has 72 divisors (see below), whose sum is σ = 106454738544000. Its totient is φ = 56307977510400.

The previous prime is 77764008684671. The next prime is 77764008684749. The reversal of 77764008684725 is 52748680046777.

It is not a de Polignac number, because 77764008684725 - 2⁸ = 77764008684469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6281923586 + ... + 6281935964.

Almost surely, 2^{77764008684725} is an apocalyptic number.

It is an amenable number.

77764008684725 is a deficient number, since it is larger than the sum of its proper divisors (28690729859275).

77764008684725 is a wasteful number, since it uses less digits than its factorization.

77764008684725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21339 (or 21323 counting only the distinct ones).

The product of its (nonzero) digits is 885104640, while the sum is 71.

The spelling of 77764008684725 in words is "seventy-seven trillion, seven hundred sixty-four billion, eight million, six hundred eighty-four thousand, seven hundred twenty-five".