135216907604 has 24 divisors (see below), whose sum is σ = 237823509000. Its totient is φ = 67268177280.

The previous prime is 135216907589. The next prime is 135216907613. The reversal of 135216907604 is 406709612531.

It can be written as a sum of positive squares in 4 ways, for example, as 51099506704 + 84117400900 = 226052^2 + 290030^2 .

It is a super-2 number, since 2×135216907604² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 538502 + ... + 748610.

It is an arithmetic number, because the mean of its divisors is an integer number (9909312875).

Almost surely, 2^135216907604 is an apocalyptic number.

It is an amenable number.

135216907604 is a deficient number, since it is larger than the sum of its proper divisors (102606601396).

135216907604 is a wasteful number, since it uses less digits than its factorization.

135216907604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210923 (or 210921 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 135216907604 in words is "one hundred thirty-five billion, two hundred sixteen million, nine hundred seven thousand, six hundred four".