77641870951 has 8 divisors (see below), whose sum is σ = 78357535920. Its totient is φ = 76929338688.

The previous prime is 77641870949. The next prime is 77641870967. The reversal of 77641870951 is 15907814677.

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 77641870951 - 2¹ = 77641870949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77641870892 and 77641870901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77641870051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733366 + ... + 832531.

It is an arithmetic number, because the mean of its divisors is an integer number (9794691990).

Almost surely, 2^77641870951 is an apocalyptic number.

77641870951 is a deficient number, since it is larger than the sum of its proper divisors (715664969).

77641870951 is a wasteful number, since it uses less digits than its factorization.

77641870951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566353.

The product of its (nonzero) digits is 2963520, while the sum is 55.

The spelling of 77641870951 in words is "seventy-seven billion, six hundred forty-one million, eight hundred seventy thousand, nine hundred fifty-one".