135638026212 has 24 divisors (see below), whose sum is σ = 340834014976. Its totient is φ = 41734777248.

The previous prime is 135638026189. The next prime is 135638026213. The reversal of 135638026212 is 212620836531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (135638026213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434737108 + ... + 434737419.

Almost surely, 2^135638026212 is an apocalyptic number.

135638026212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135638026212 is an abundant number, since it is smaller than the sum of its proper divisors (205195988764).

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

135638026212 is a wasteful number, since it uses less digits than its factorization.

135638026212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869474547 (or 869474545 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 135638026212 in words is "one hundred thirty-five billion, six hundred thirty-eight million, twenty-six thousand, two hundred twelve".