4069978521238 has 32 divisors (see below), whose sum is σ = 7017780845376. Its totient is φ = 1734108799488.

The previous prime is 4069978521223. The next prime is 4069978521239. The reversal of 4069978521238 is 8321258799604.

It is a super-3 number, since 3×4069978521238³ (a number of 39 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4069978521238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4069978521239) 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, 88314570 + ... + 88360642.

It is an arithmetic number, because the mean of its divisors is an integer number (219305651418).

It is a 2-persistent number, because it is pandigital, and so is 2⋅4069978521238 = 8139957042476, but 3⋅4069978521238 = 12209935563714 is not.

Almost surely, 2^{4069978521238} is an apocalyptic number.

4069978521238 is a deficient number, since it is larger than the sum of its proper divisors (2947802324138).

4069978521238 is a wasteful number, since it uses less digits than its factorization.

4069978521238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82728.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 4069978521238 in words is "four trillion, sixty-nine billion, nine hundred seventy-eight million, five hundred twenty-one thousand, two hundred thirty-eight".