1187063389956 has 48 divisors (see below), whose sum is σ = 2970605534400. Its totient is φ = 367789249152.

The previous prime is 1187063389931. The next prime is 1187063389987. The reversal of 1187063389956 is 6599833607811.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49105071 + ... + 49129238.

It is an arithmetic number, because the mean of its divisors is an integer number (61887615300).

Almost surely, 2^{1187063389956} is an apocalyptic number.

It is an amenable number.

1187063389956 is an abundant number, since it is smaller than the sum of its proper divisors (1783542144444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1187063389956 is a wasteful number, since it uses less digits than its factorization.

1187063389956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98234388 (or 98234386 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 66.

The spelling of 1187063389956 in words is "one trillion, one hundred eighty-seven billion, sixty-three million, three hundred eighty-nine thousand, nine hundred fifty-six".