1287861996300 has 72 divisors (see below), whose sum is σ = 4064960784192. Its totient is φ = 312208968000.

The previous prime is 1287861996299. The next prime is 1287861996307. The reversal of 1287861996300 is 36991687821.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (1287861996307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195127306 + ... + 195133905.

Almost surely, 2^{1287861996300} is an apocalyptic number.

1287861996300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1287861996300 is an abundant number, since it is smaller than the sum of its proper divisors (2777098787892).

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

1287861996300 is a wasteful number, since it uses less digits than its factorization.

1287861996300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390261239 (or 390261232 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 1287861996300 in words is "one trillion, two hundred eighty-seven billion, eight hundred sixty-one million, nine hundred ninety-six thousand, three hundred".