66477403212 has 48 divisors (see below), whose sum is σ = 169889457024. Its totient is φ = 20064400000.

The previous prime is 66477403081. The next prime is 66477403219. The reversal of 66477403212 is 21230477466.

It is not an unprimeable number, because it can be changed into a prime (66477403219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970089 + ... + 1036352.

It is an arithmetic number, because the mean of its divisors is an integer number (3539363688).

Almost surely, 2^66477403212 is an apocalyptic number.

It is an amenable number.

66477403212 is an abundant number, since it is smaller than the sum of its proper divisors (103412053812).

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

66477403212 is a wasteful number, since it uses less digits than its factorization.

66477403212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006710 (or 2006708 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 66477403212 in words is "sixty-six billion, four hundred seventy-seven million, four hundred three thousand, two hundred twelve".