66777371000 has 64 divisors (see below), whose sum is σ = 158820816960. Its totient is φ = 26273040000.

The previous prime is 66777370997. The next prime is 66777371009. The reversal of 66777371000 is 17377766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66777371009) 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, 486356 + ... + 608355.

It is an arithmetic number, because the mean of its divisors is an integer number (2481575265).

Almost surely, 2^66777371000 is an apocalyptic number.

It is an amenable number.

66777371000 is an abundant number, since it is smaller than the sum of its proper divisors (92043445960).

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

66777371000 is a wasteful number, since it uses less digits than its factorization.

66777371000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094793 (or 1094779 counting only the distinct ones).

The product of its (nonzero) digits is 259308, while the sum is 44.

The spelling of 66777371000 in words is "sixty-six billion, seven hundred seventy-seven million, three hundred seventy-one thousand".