1200980916765 has 128 divisors (see below), whose sum is σ = 2569701888000. Its totient is φ = 519883515648.

The previous prime is 1200980916763. The next prime is 1200980916767. The reversal of 1200980916765 is 5676190890021.

It is an interprime number because it is at equal distance from previous prime (1200980916763) and next prime (1200980916767).

It is not a de Polignac number, because 1200980916765 - 2¹ = 1200980916763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200980916763) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 41982447 + ... + 42011043.

It is an arithmetic number, because the mean of its divisors is an integer number (20075796000).

Almost surely, 2^{1200980916765} is an apocalyptic number.

1200980916765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200980916765 is an abundant number, since it is smaller than the sum of its proper divisors (1368720971235).

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

1200980916765 is a wasteful number, since it uses less digits than its factorization.

1200980916765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30976 (or 30970 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 1200980916765 in words is "one trillion, two hundred billion, nine hundred eighty million, nine hundred sixteen thousand, seven hundred sixty-five".