1966277256472 has 16 divisors (see below), whose sum is σ = 3693509845560. Its totient is φ = 981341297664.

The previous prime is 1966277256467. The next prime is 1966277256473. The reversal of 1966277256472 is 2746527726691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966277256473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224661673 + ... + 224670424.

Almost surely, 2^{1966277256472} is an apocalyptic number.

It is an amenable number.

1966277256472 is a deficient number, since it is larger than the sum of its proper divisors (1727232589088).

1966277256472 is a wasteful number, since it uses less digits than its factorization.

1966277256472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449332650 (or 449332646 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 64.

The spelling of 1966277256472 in words is "one trillion, nine hundred sixty-six billion, two hundred seventy-seven million, two hundred fifty-six thousand, four hundred seventy-two".