134739025981 has 8 divisors (see below), whose sum is σ = 154293600384. Its totient is φ = 115260987120.

The previous prime is 134739025979. The next prime is 134739026011. The reversal of 134739025981 is 189520937431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134739025981 - 2¹ = 134739025979 is a prime.

It is a super-2 number, since 2×134739025981² (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 (134739025081) 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, 19130110 + ... + 19137151.

It is an arithmetic number, because the mean of its divisors is an integer number (19286700048).

Almost surely, 2^134739025981 is an apocalyptic number.

It is an amenable number.

134739025981 is a deficient number, since it is larger than the sum of its proper divisors (19554574403).

134739025981 is an equidigital number, since it uses as much as digits as its factorization.

134739025981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38267771.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 134739025981 in words is "one hundred thirty-four billion, seven hundred thirty-nine million, twenty-five thousand, nine hundred eighty-one".