77730051553432 has 32 divisors (see below), whose sum is σ = 147602695680000. Its totient is φ = 38369425974048.

The previous prime is 77730051553421. The next prime is 77730051553433. The reversal of 77730051553432 is 23435515003777.

It is a self number, because there is not a number n which added to its sum of digits gives 77730051553432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77730051553433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849319 + ... + 12497257.

It is an arithmetic number, because the mean of its divisors is an integer number (4612584240000).

Almost surely, 2^{77730051553432} is an apocalyptic number.

It is an amenable number.

77730051553432 is a deficient number, since it is larger than the sum of its proper divisors (69872644126568).

77730051553432 is a wasteful number, since it uses less digits than its factorization.

77730051553432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11658583 (or 11658579 counting only the distinct ones).

The product of its (nonzero) digits is 9261000, while the sum is 52.

The spelling of 77730051553432 in words is "seventy-seven trillion, seven hundred thirty billion, fifty-one million, five hundred fifty-three thousand, four hundred thirty-two".