30577978069 has 8 divisors (see below), whose sum is σ = 31083169280. Its totient is φ = 30072913200.

The previous prime is 30577978001. The next prime is 30577978091. The reversal of 30577978069 is 96087977503.

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 30577978069 - 2⁹ = 30577977557 is a prime.

It is a super-2 number, since 2×30577978069² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30577977998 and 30577978016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30577978169) 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, 541564 + ... + 595354.

It is an arithmetic number, because the mean of its divisors is an integer number (3885396160).

Almost surely, 2^30577978069 is an apocalyptic number.

It is an amenable number.

30577978069 is a deficient number, since it is larger than the sum of its proper divisors (505191211).

30577978069 is an equidigital number, since it uses as much as digits as its factorization.

30577978069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63171.

The product of its (nonzero) digits is 20003760, while the sum is 61.

The spelling of 30577978069 in words is "thirty billion, five hundred seventy-seven million, nine hundred seventy-eight thousand, sixty-nine".