138823440241552 has 40 divisors (see below), whose sum is σ = 297554979494592. Its totient is φ = 62212809321600.

The previous prime is 138823440241531. The next prime is 138823440241573. The reversal of 138823440241552 is 255142044328831.

It is an interprime number because it is at equal distance from previous prime (138823440241531) and next prime (138823440241573).

It is a super-2 number, since 2×138823440241552² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138823440241552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5554702623 + ... + 5554727614.

Almost surely, 2^{138823440241552} is an apocalyptic number.

It is an amenable number.

138823440241552 is an abundant number, since it is smaller than the sum of its proper divisors (158731539253040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138823440241552 is a wasteful number, since it uses less digits than its factorization.

138823440241552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109430327 (or 11109430321 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 52.

The spelling of 138823440241552 in words is "one hundred thirty-eight trillion, eight hundred twenty-three billion, four hundred forty million, two hundred forty-one thousand, five hundred fifty-two".