1260660331564 has 72 divisors (see below), whose sum is σ = 2455069176000. Its totient is φ = 565543200768.

The previous prime is 1260660331537. The next prime is 1260660331589. The reversal of 1260660331564 is 4651330660621.

It is a self number, because there is not a number n which added to its sum of digits gives 1260660331564.

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, 2410392 + ... + 2886400.

It is an arithmetic number, because the mean of its divisors is an integer number (34098183000).

Almost surely, 2^{1260660331564} is an apocalyptic number.

It is an amenable number.

1260660331564 is a deficient number, since it is larger than the sum of its proper divisors (1194408844436).

1260660331564 is a wasteful number, since it uses less digits than its factorization.

1260660331564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476155 (or 476136 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 1260660331564 in words is "one trillion, two hundred sixty billion, six hundred sixty million, three hundred thirty-one thousand, five hundred sixty-four".