128755977216662 has 32 divisors (see below), whose sum is σ = 199529734461312. Its totient is φ = 62267786740224.

The previous prime is 128755977216653. The next prime is 128755977216703. The reversal of 128755977216662 is 266612779557821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (74).

It is a self number, because there is not a number n which added to its sum of digits gives 128755977216662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926978 + ... + 16073930.

It is an arithmetic number, because the mean of its divisors is an integer number (6235304201916).

Almost surely, 2^{128755977216662} is an apocalyptic number.

128755977216662 is a deficient number, since it is larger than the sum of its proper divisors (70773757244650).

128755977216662 is a wasteful number, since it uses less digits than its factorization.

128755977216662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15147672.

The product of its digits is 1066867200, while the sum is 74.

The spelling of 128755977216662 in words is "one hundred twenty-eight trillion, seven hundred fifty-five billion, nine hundred seventy-seven million, two hundred sixteen thousand, six hundred sixty-two".