135207563776 has 20 divisors (see below), whose sum is σ = 270151051302. Its totient is φ = 67603781632.

The previous prime is 135207563761. The next prime is 135207563783. The reversal of 135207563776 is 677365702531.

It can be written as a sum of positive squares in only one way, i.e., 85310726400 + 49896837376 = 292080^2 + 223376^2 .

It is a super-2 number, since 2×135207563776² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132038125 + ... + 132039148.

Almost surely, 2^135207563776 is an apocalyptic number.

135207563776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135207563776 is a deficient number, since it is larger than the sum of its proper divisors (134943487526).

135207563776 is an frugal number, since it uses more digits than its factorization.

135207563776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264077291 (or 264077275 counting only the distinct ones).

The product of its (nonzero) digits is 5556600, while the sum is 52.

The spelling of 135207563776 in words is "one hundred thirty-five billion, two hundred seven million, five hundred sixty-three thousand, seven hundred seventy-six".