77543351951 has 8 divisors (see below), whose sum is σ = 84877213344. Its totient is φ = 70405060320.

The previous prime is 77543351933. The next prime is 77543351957. The reversal of 77543351951 is 15915334577.

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 77543351951 - 2²⁶ = 77476243087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77543351951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77543351957) 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, 48891611 + ... + 48893196.

It is an arithmetic number, because the mean of its divisors is an integer number (10609651668).

Almost surely, 2^77543351951 is an apocalyptic number.

77543351951 is a deficient number, since it is larger than the sum of its proper divisors (7333861393).

77543351951 is a wasteful number, since it uses less digits than its factorization.

77543351951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97784881.

The product of its digits is 1984500, while the sum is 50.

The spelling of 77543351951 in words is "seventy-seven billion, five hundred forty-three million, three hundred fifty-one thousand, nine hundred fifty-one".