66376644750 has 160 divisors (see below), whose sum is σ = 199897746048. Its totient is φ = 16338801600.

The previous prime is 66376644703. The next prime is 66376644769. The reversal of 66376644750 is 5744667366.

66376644750 is a `hidden beast` number, since 66 + 37 + 66 + 447 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 137179 + ... + 389321.

Almost surely, 2^66376644750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66376644750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99948873024).

66376644750 is an abundant number, since it is smaller than the sum of its proper divisors (133521101298).

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

66376644750 is a wasteful number, since it uses less digits than its factorization.

66376644750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252185 (or 252166 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 54.

The spelling of 66376644750 in words is "sixty-six billion, three hundred seventy-six million, six hundred forty-four thousand, seven hundred fifty".