138553355511 has 96 divisors (see below), whose sum is σ = 232421529600. Its totient is φ = 78952734720.

The previous prime is 138553355411. The next prime is 138553355519. The reversal of 138553355511 is 115553355831.

It is a happy number.

138553355511 is a `hidden beast` number, since 1 + 3 + 8 + 55 + 33 + 55 + 511 = 666.

It is not a de Polignac number, because 138553355511 - 2¹³ = 138553347319 is a prime.

It is a super-2 number, since 2×138553355511² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138553355519) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9635335 + ... + 9649703.

It is an arithmetic number, because the mean of its divisors is an integer number (2421057600).

Almost surely, 2^138553355511 is an apocalyptic number.

138553355511 is a deficient number, since it is larger than the sum of its proper divisors (93868174089).

138553355511 is a wasteful number, since it uses less digits than its factorization.

138553355511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14549 (or 14546 counting only the distinct ones).

The product of its digits is 675000, while the sum is 45.

The spelling of 138553355511 in words is "one hundred thirty-eight billion, five hundred fifty-three million, three hundred fifty-five thousand, five hundred eleven".