66537701512 has 96 divisors (see below), whose sum is σ = 133409764800. Its totient is φ = 31051088640.

The previous prime is 66537701479. The next prime is 66537701551. The reversal of 66537701512 is 21510773566.

It is a super-2 number, since 2×66537701512² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 107491939 + ... + 107492557.

It is an arithmetic number, because the mean of its divisors is an integer number (1389685050).

Almost surely, 2^66537701512 is an apocalyptic number.

It is an amenable number.

66537701512 is an abundant number, since it is smaller than the sum of its proper divisors (66872063288).

66537701512 is a wasteful number, since it uses less digits than its factorization.

66537701512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 66537701512 in words is "sixty-six billion, five hundred thirty-seven million, seven hundred one thousand, five hundred twelve".