60721536253 has 16 divisors (see below), whose sum is σ = 69542556160. Its totient is φ = 51937272576.

The previous prime is 60721536217. The next prime is 60721536257. The reversal of 60721536253 is 35263512706.

It is a de Polignac number, because none of the positive numbers 2^k-60721536253 is a prime.

It is a super-3 number, since 3×60721536253³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60721536257) 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 15 ways as a sum of consecutive naturals, for example, 7037500 + ... + 7046122.

It is an arithmetic number, because the mean of its divisors is an integer number (4346409760).

Almost surely, 2^60721536253 is an apocalyptic number.

It is an amenable number.

60721536253 is a deficient number, since it is larger than the sum of its proper divisors (8821019907).

60721536253 is a wasteful number, since it uses less digits than its factorization.

60721536253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10636.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 60721536253 in words is "sixty billion, seven hundred twenty-one million, five hundred thirty-six thousand, two hundred fifty-three".