135720138650672 has 10 divisors (see below), whose sum is σ = 262957768635708. Its totient is φ = 67860069325328.

The previous prime is 135720138650669. The next prime is 135720138650693. The reversal of 135720138650672 is 276056831027531.

It is a super-4 number, since 4×135720138650672⁴ (a number of 58 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4241254332818 + ... + 4241254332849.

Almost surely, 2^{135720138650672} is an apocalyptic number.

It is an amenable number.

135720138650672 is a deficient number, since it is larger than the sum of its proper divisors (127237629985036).

135720138650672 is an equidigital number, since it uses as much as digits as its factorization.

135720138650672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8482508665675 (or 8482508665669 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 135720138650672 in words is "one hundred thirty-five trillion, seven hundred twenty billion, one hundred thirty-eight million, six hundred fifty thousand, six hundred seventy-two".