155489960753449 has 8 divisors (see below), whose sum is σ = 177702905113920. Its totient is φ = 133277039599056.

The previous prime is 155489960753443. The next prime is 155489960753509. The reversal of 155489960753449 is 944357069984551.

155489960753449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 155489960753449 - 2³ = 155489960753441 is a prime.

It is a super-2 number, since 2×155489960753449² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155489960753441) 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, 12337302 + ... + 21521824.

It is an arithmetic number, because the mean of its divisors is an integer number (22212863139240).

Almost surely, 2^{155489960753449} is an apocalyptic number.

It is an amenable number.

155489960753449 is a deficient number, since it is larger than the sum of its proper divisors (22212944360471).

155489960753449 is an equidigital number, since it uses as much as digits as its factorization.

155489960753449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11603039.

The product of its (nonzero) digits is 5878656000, while the sum is 79.

The spelling of 155489960753449 in words is "one hundred fifty-five trillion, four hundred eighty-nine billion, nine hundred sixty million, seven hundred fifty-three thousand, four hundred forty-nine".