128502068591401 has 16 divisors (see below), whose sum is σ = 129562271549568. Its totient is φ = 127445270659200.

The previous prime is 128502068591329. The next prime is 128502068591417. The reversal of 128502068591401 is 104195860205821.

It is a cyclic number.

It is not a de Polignac number, because 128502068591401 - 2²³ = 128502060202793 is a prime.

It is a super-2 number, since 2×128502068591401² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128502068591441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473819700 + ... + 474090826.

It is an arithmetic number, because the mean of its divisors is an integer number (8097641971848).

Almost surely, 2^{128502068591401} is an apocalyptic number.

It is an amenable number.

128502068591401 is a deficient number, since it is larger than the sum of its proper divisors (1060202958167).

128502068591401 is a wasteful number, since it uses less digits than its factorization.

128502068591401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277392.

The product of its (nonzero) digits is 1382400, while the sum is 52.

The spelling of 128502068591401 in words is "one hundred twenty-eight trillion, five hundred two billion, sixty-eight million, five hundred ninety-one thousand, four hundred one".