66021301050 has 48 divisors (see below), whose sum is σ = 170851654080. Its totient is φ = 16840215040.

The previous prime is 66021301033. The next prime is 66021301067. The reversal of 66021301050 is 5010312066.

It is an interprime number because it is at equal distance from previous prime (66021301033) and next prime (66021301067).

It is a super-2 number, since 2×66021301050² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66021301050.

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, 9564855 + ... + 9571754.

It is an arithmetic number, because the mean of its divisors is an integer number (3559409460).

Almost surely, 2^66021301050 is an apocalyptic number.

66021301050 is an abundant number, since it is smaller than the sum of its proper divisors (104830353030).

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

66021301050 is a wasteful number, since it uses less digits than its factorization.

66021301050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19136647 (or 19136642 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The spelling of 66021301050 in words is "sixty-six billion, twenty-one million, three hundred one thousand, fifty".