60721115136 has 104 divisors (see below), whose sum is σ = 176622074304. Its totient is φ = 18400296960.

The previous prime is 60721115131. The next prime is 60721115141. The reversal of 60721115136 is 63151112706.

It is an interprime number because it is at equal distance from previous prime (60721115131) and next prime (60721115141).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 60721115097 and 60721115106.

It is not an unprimeable number, because it can be changed into a prime (60721115131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89446 + ... + 359781.

It is an arithmetic number, because the mean of its divisors is an integer number (1698289176).

Almost surely, 2^60721115136 is an apocalyptic number.

60721115136 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

60721115136 is an abundant number, since it is smaller than the sum of its proper divisors (115900959168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

60721115136 is a wasteful number, since it uses less digits than its factorization.

60721115136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449265 (or 449243 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The spelling of 60721115136 in words is "sixty billion, seven hundred twenty-one million, one hundred fifteen thousand, one hundred thirty-six".