1264950646984 has 8 divisors (see below), whose sum is σ = 2371782463110. Its totient is φ = 632475323488.

The previous prime is 1264950646901. The next prime is 1264950647039. The reversal of 1264950646984 is 4896460594621.

It can be written as a sum of positive squares in only one way, i.e., 1238942634084 + 26008012900 = 1113078^2 + 161270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79059415429 + ... + 79059415444.

Almost surely, 2^{1264950646984} is an apocalyptic number.

It is an amenable number.

1264950646984 is a deficient number, since it is larger than the sum of its proper divisors (1106831816126).

1264950646984 is a wasteful number, since it uses less digits than its factorization.

1264950646984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158118830879 (or 158118830875 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 64.

The spelling of 1264950646984 in words is "one trillion, two hundred sixty-four billion, nine hundred fifty million, six hundred forty-six thousand, nine hundred eighty-four".