77530825007 has 8 divisors (see below), whose sum is σ = 77723682960. Its totient is φ = 77338048320.

The previous prime is 77530824947. The next prime is 77530825013. The reversal of 77530825007 is 70052803577.

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 77530825007 - 2³² = 73235857711 is a prime.

It is a super-2 number, since 2×77530825007² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77530822007) 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, 2183657 + ... + 2218877.

It is an arithmetic number, because the mean of its divisors is an integer number (9715460370).

Almost surely, 2^77530825007 is an apocalyptic number.

77530825007 is a deficient number, since it is larger than the sum of its proper divisors (192857953).

77530825007 is a wasteful number, since it uses less digits than its factorization.

77530825007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40633.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 77530825007 in words is "seventy-seven billion, five hundred thirty million, eight hundred twenty-five thousand, seven".