66636210461450 has 48 divisors (see below), whose sum is σ = 141652446788160. Its totient is φ = 22846232622720.

The previous prime is 66636210461419. The next prime is 66636210461479. The reversal of 66636210461450 is 5416401263666.

It is a super-2 number, since 2×66636210461450² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15375821 + ... + 19227279.

It is an arithmetic number, because the mean of its divisors is an integer number (2951092641420).

Almost surely, 2^{66636210461450} is an apocalyptic number.

66636210461450 is an abundant number, since it is smaller than the sum of its proper divisors (75016236326710).

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

66636210461450 is a wasteful number, since it uses less digits than its factorization.

66636210461450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900911 (or 3900906 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 66636210461450 in words is "sixty-six trillion, six hundred thirty-six billion, two hundred ten million, four hundred sixty-one thousand, four hundred fifty".