1252761199980 has 72 divisors (see below), whose sum is σ = 3666872384112. Its totient is φ = 319544877696.

The previous prime is 1252761199927. The next prime is 1252761199993. The reversal of 1252761199980 is 899911672521.

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

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, 19702999 + ... + 19766478.

Almost surely, 2^{1252761199980} is an apocalyptic number.

1252761199980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252761199980 is an abundant number, since it is smaller than the sum of its proper divisors (2414111184132).

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

1252761199980 is a wasteful number, since it uses less digits than its factorization.

1252761199980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39469535 (or 39469510 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 60.

The spelling of 1252761199980 in words is "one trillion, two hundred fifty-two billion, seven hundred sixty-one million, one hundred ninety-nine thousand, nine hundred eighty".