147720026857 has 8 divisors (see below), whose sum is σ = 159138249536. Its totient is φ = 136309681872.

The previous prime is 147720026833. The next prime is 147720026869. The reversal of 147720026857 is 758620027741.

147720026857 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 de Polignac number, because none of the positive numbers 2^k-147720026857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147720026857.

It is not an unprimeable number, because it can be changed into a prime (147720026897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930443 + ... + 2005504.

It is an arithmetic number, because the mean of its divisors is an integer number (19892281192).

Almost surely, 2^147720026857 is an apocalyptic number.

It is an amenable number.

147720026857 is a deficient number, since it is larger than the sum of its proper divisors (11418222679).

147720026857 is a wasteful number, since it uses less digits than its factorization.

147720026857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3938847.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 147720026857 in words is "one hundred forty-seven billion, seven hundred twenty million, twenty-six thousand, eight hundred fifty-seven".