147720257655 has 32 divisors (see below), whose sum is σ = 240172875264. Its totient is φ = 77513521536.

The previous prime is 147720257617. The next prime is 147720257683. The reversal of 147720257655 is 556752027741.

It is not a de Polignac number, because 147720257655 - 2⁹ = 147720257143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 147720257598 and 147720257607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 737817 + ... + 916413.

It is an arithmetic number, because the mean of its divisors is an integer number (7505402352).

Almost surely, 2^147720257655 is an apocalyptic number.

147720257655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

147720257655 is a deficient number, since it is larger than the sum of its proper divisors (92452617609).

147720257655 is a wasteful number, since it uses less digits than its factorization.

147720257655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179495.

The product of its (nonzero) digits is 4116000, while the sum is 51.

The spelling of 147720257655 in words is "one hundred forty-seven billion, seven hundred twenty million, two hundred fifty-seven thousand, six hundred fifty-five".