128636486377754 has 8 divisors (see below), whose sum is σ = 192954909404160. Its totient is φ = 64318183243036.

The previous prime is 128636486377709. The next prime is 128636486377783. The reversal of 128636486377754 is 457773684636821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128636486377754² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27240764 + ... + 31612215.

It is an arithmetic number, because the mean of its divisors is an integer number (24119363675520).

Almost surely, 2^{128636486377754} is an apocalyptic number.

128636486377754 is a deficient number, since it is larger than the sum of its proper divisors (64318423026406).

128636486377754 is a wasteful number, since it uses less digits than its factorization.

128636486377754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59945844.

The product of its digits is 6827950080, while the sum is 77.

The spelling of 128636486377754 in words is "one hundred twenty-eight trillion, six hundred thirty-six billion, four hundred eighty-six million, three hundred seventy-seven thousand, seven hundred fifty-four".