1201530256964 has 12 divisors (see below), whose sum is σ = 2103246113388. Its totient is φ = 600602796000.

The previous prime is 1201530256951. The next prime is 1201530256967. The reversal of 1201530256964 is 4696520351021.

It can be written as a sum of positive squares in 2 ways, for example, as 558980522500 + 642549734464 = 747650^2 + 801592^2 .

It is not an unprimeable number, because it can be changed into a prime (1201530256967) 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, 40566467 + ... + 40596074.

It is an arithmetic number, because the mean of its divisors is an integer number (175270509449).

Almost surely, 2^{1201530256964} is an apocalyptic number.

It is an amenable number.

1201530256964 is a deficient number, since it is larger than the sum of its proper divisors (901715856424).

1201530256964 is a wasteful number, since it uses less digits than its factorization.

1201530256964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81166246 (or 81166244 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 1201530256964 in words is "one trillion, two hundred one billion, five hundred thirty million, two hundred fifty-six thousand, nine hundred sixty-four".