147720257653 has 4 divisors (see below), whose sum is σ = 147735753120. Its totient is φ = 147704762188.

The previous prime is 147720257617. The next prime is 147720257683. The reversal of 147720257653 is 356752027741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356752027741 = 118033 ⋅3022477.

It is a cyclic number.

It is not a de Polignac number, because 147720257653 - 2²¹ = 147718160501 is a prime.

It is a super-3 number, since 3×147720257653³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147720257597 and 147720257606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147720257603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7733425 + ... + 7752502.

It is an arithmetic number, because the mean of its divisors is an integer number (36933938280).

Almost surely, 2^147720257653 is an apocalyptic number.

It is an amenable number.

147720257653 is a deficient number, since it is larger than the sum of its proper divisors (15495467).

147720257653 is an equidigital number, since it uses as much as digits as its factorization.

147720257653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15495466.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 147720257653 in words is "one hundred forty-seven billion, seven hundred twenty million, two hundred fifty-seven thousand, six hundred fifty-three".