66196076457416 has 16 divisors (see below), whose sum is σ = 124178100107100. Its totient is φ = 33081916428864.

The previous prime is 66196076457391. The next prime is 66196076457529. The reversal of 66196076457416 is 61475467069166.

It can be written as a sum of positive squares in 2 ways, for example, as 58110891302500 + 8085185154916 = 7623050^2 + 2843446^2 .

It is a super-2 number, since 2×66196076457416² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2015207531 + ... + 2015240378.

Almost surely, 2^{66196076457416} is an apocalyptic number.

It is an amenable number.

66196076457416 is a deficient number, since it is larger than the sum of its proper divisors (57982023649684).

66196076457416 is a wasteful number, since it uses less digits than its factorization.

66196076457416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030449968 (or 4030449964 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 68.

The spelling of 66196076457416 in words is "sixty-six trillion, one hundred ninety-six billion, seventy-six million, four hundred fifty-seven thousand, four hundred sixteen".