77954386069 has 8 divisors (see below), whose sum is σ = 90771684480. Its totient is φ = 65557327056.

The previous prime is 77954386039. The next prime is 77954386201. The reversal of 77954386069 is 96068345977.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77954386069 - 2¹³ = 77954377877 is a prime.

It is a super-2 number, since 2×77954386069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77954386069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77954386009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105059449 + ... + 105060190.

It is an arithmetic number, because the mean of its divisors is an integer number (11346460560).

Almost surely, 2^77954386069 is an apocalyptic number.

It is an amenable number.

77954386069 is a deficient number, since it is larger than the sum of its proper divisors (12817298411).

77954386069 is a wasteful number, since it uses less digits than its factorization.

77954386069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210119699.

The product of its (nonzero) digits is 68584320, while the sum is 64.

The spelling of 77954386069 in words is "seventy-seven billion, nine hundred fifty-four million, three hundred eighty-six thousand, sixty-nine".