128023702415 has 64 divisors (see below), whose sum is σ = 184232226816. Its totient is φ = 83584230912.

The previous prime is 128023702409. The next prime is 128023702421. The reversal of 128023702415 is 514207320821.

It is a Cunningham number, because it is equal to 357804²-1.

It is an interprime number because it is at equal distance from previous prime (128023702409) and next prime (128023702421).

It is not a de Polignac number, because 128023702415 - 2¹⁴ = 128023686031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12517994 + ... + 12528216.

It is an arithmetic number, because the mean of its divisors is an integer number (2878628544).

Almost surely, 2^128023702415 is an apocalyptic number.

128023702415 is a deficient number, since it is larger than the sum of its proper divisors (56208524401).

128023702415 is a wasteful number, since it uses less digits than its factorization.

128023702415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10488.

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 128023702415 in words is "one hundred twenty-eight billion, twenty-three million, seven hundred two thousand, four hundred fifteen".