66551051050 has 48 divisors (see below), whose sum is σ = 135064158912. Its totient is φ = 24195718400.

The previous prime is 66551051029. The next prime is 66551051059. The reversal of 66551051050 is 5015015566.

It is a super-2 number, since 2×66551051050² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66551050997 and 66551051015.

It is not an unprimeable number, because it can be changed into a prime (66551051059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4278387 + ... + 4293913.

It is an arithmetic number, because the mean of its divisors is an integer number (2813836644).

Almost surely, 2^66551051050 is an apocalyptic number.

66551051050 is an abundant number, since it is smaller than the sum of its proper divisors (68513107862).

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

66551051050 is a wasteful number, since it uses less digits than its factorization.

66551051050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23343 (or 23338 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 66551051050 in words is "sixty-six billion, five hundred fifty-one million, fifty-one thousand, fifty".