128711346404 has 6 divisors (see below), whose sum is σ = 225244856214. Its totient is φ = 64355673200.

The previous prime is 128711346383. The next prime is 128711346433. The reversal of 128711346404 is 404643117821.

It can be written as a sum of positive squares in only one way, i.e., 113096344804 + 15615001600 = 336298^2 + 124960^2 .

It is a super-2 number, since 2×128711346404² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16088918297 + ... + 16088918304.

It is an arithmetic number, because the mean of its divisors is an integer number (37540809369).

Almost surely, 2^128711346404 is an apocalyptic number.

It is an amenable number.

128711346404 is a deficient number, since it is larger than the sum of its proper divisors (96533509810).

128711346404 is a wasteful number, since it uses less digits than its factorization.

128711346404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32177836605 (or 32177836603 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 128711346404 in words is "one hundred twenty-eight billion, seven hundred eleven million, three hundred forty-six thousand, four hundred four".