77907620437 has 8 divisors (see below), whose sum is σ = 79670714400. Its totient is φ = 76159280784.

The previous prime is 77907620381. The next prime is 77907620447. The reversal of 77907620437 is 73402670977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77907620437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77907620447) 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, 3677898 + ... + 3699019.

It is an arithmetic number, because the mean of its divisors is an integer number (9958839300).

Almost surely, 2^77907620437 is an apocalyptic number.

It is an amenable number.

77907620437 is a deficient number, since it is larger than the sum of its proper divisors (1763093963).

77907620437 is a wasteful number, since it uses less digits than its factorization.

77907620437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7377155.

The product of its (nonzero) digits is 3111696, while the sum is 52.

The spelling of 77907620437 in words is "seventy-seven billion, nine hundred seven million, six hundred twenty thousand, four hundred thirty-seven".