780730997760 has 352 divisors, whose sum is σ = 3170949073920. Its totient is φ = 178452578304.

The previous prime is 780730997731. The next prime is 780730997789. The reversal of 780730997760 is 67799037087.

It is an interprime number because it is at equal distance from previous prime (780730997731) and next prime (780730997789).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564277 + ... + 1371083.

Almost surely, 2^780730997760 is an apocalyptic number.

780730997760 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780730997760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1585474536960).

780730997760 is an abundant number, since it is smaller than the sum of its proper divisors (2390218076160).

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

780730997760 is a wasteful number, since it uses less digits than its factorization.

780730997760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806848 (or 806824 counting only the distinct ones).

The product of its (nonzero) digits is 28005264, while the sum is 63.

The spelling of 780730997760 in words is "seven hundred eighty billion, seven hundred thirty million, nine hundred ninety-seven thousand, seven hundred sixty".