77554391043 has 8 divisors (see below), whose sum is σ = 103408323408. Its totient is φ = 51701693024.

The previous prime is 77554391023. The next prime is 77554391053. The reversal of 77554391043 is 34019345577.

It is a happy number.

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 77554391043 - 2⁹ = 77554390531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77554390983 and 77554391001.

It is not an unprimeable number, because it can be changed into a prime (77554391003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150396 + ... + 421577.

It is an arithmetic number, because the mean of its divisors is an integer number (12926040426).

Almost surely, 2^77554391043 is an apocalyptic number.

77554391043 is a deficient number, since it is larger than the sum of its proper divisors (25853932365).

77554391043 is a wasteful number, since it uses less digits than its factorization.

77554391043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617173.

The product of its (nonzero) digits is 1587600, while the sum is 48.

It can be divided in two parts, 775543 and 91043, that added together give a triangular number (866586 = T₁₃₁₆).

The spelling of 77554391043 in words is "seventy-seven billion, five hundred fifty-four million, three hundred ninety-one thousand, forty-three".