77001632477 has 64 divisors (see below), whose sum is σ = 101186426880. Its totient is φ = 56860876800.

The previous prime is 77001632471. The next prime is 77001632573. The reversal of 77001632477 is 77423610077.

It is a happy number.

It is not a de Polignac number, because 77001632477 - 2⁸ = 77001632221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77001632471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26198474 + ... + 26201412.

It is an arithmetic number, because the mean of its divisors is an integer number (1581037920).

Almost surely, 2^77001632477 is an apocalyptic number.

77001632477 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

77001632477 is a deficient number, since it is larger than the sum of its proper divisors (24184794403).

77001632477 is a wasteful number, since it uses less digits than its factorization.

77001632477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234.

The product of its (nonzero) digits is 345744, while the sum is 44.

The spelling of 77001632477 in words is "seventy-seven billion, one million, six hundred thirty-two thousand, four hundred seventy-seven".