77210925071 has 16 divisors (see below), whose sum is σ = 90376777728. Its totient is φ = 64592080800.

The previous prime is 77210925041. The next prime is 77210925107. The reversal of 77210925071 is 17052901277.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77210925071 is a prime.

It is a super-4 number, since 4×77210925071⁴ (a number of 45 digits) contains 4444 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 (77210925041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473945 + ... + 615666.

It is an arithmetic number, because the mean of its divisors is an integer number (5648548608).

Almost surely, 2^77210925071 is an apocalyptic number.

77210925071 is a deficient number, since it is larger than the sum of its proper divisors (13165852657).

77210925071 is a wasteful number, since it uses less digits than its factorization.

77210925071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089862.

The product of its (nonzero) digits is 61740, while the sum is 41.

The spelling of 77210925071 in words is "seventy-seven billion, two hundred ten million, nine hundred twenty-five thousand, seventy-one".