77457755443 has 8 divisors (see below), whose sum is σ = 78468078080. Its totient is φ = 76448179080.

The previous prime is 77457755423. The next prime is 77457755483. The reversal of 77457755443 is 34455775477.

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-77457755443 is a prime.

It is a super-2 number, since 2×77457755443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77457755423) 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 7 ways as a sum of consecutive naturals, for example, 23908 + ... + 394318.

It is an arithmetic number, because the mean of its divisors is an integer number (9808509760).

Almost surely, 2^77457755443 is an apocalyptic number.

77457755443 is a deficient number, since it is larger than the sum of its proper divisors (1010322637).

77457755443 is a wasteful number, since it uses less digits than its factorization.

77457755443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373137.

The product of its digits is 57624000, while the sum is 58.

The spelling of 77457755443 in words is "seventy-seven billion, four hundred fifty-seven million, seven hundred fifty-five thousand, four hundred forty-three".