787490291780 has 96 divisors (see below), whose sum is σ = 1759971193344. Its totient is φ = 294951481344.

The previous prime is 787490291761. The next prime is 787490291813. The reversal of 787490291780 is 87192094787.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117479909 + ... + 117486611.

It is an arithmetic number, because the mean of its divisors is an integer number (18333033264).

Almost surely, 2^787490291780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 787490291780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879985596672).

787490291780 is an abundant number, since it is smaller than the sum of its proper divisors (972480901564).

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

787490291780 is a wasteful number, since it uses less digits than its factorization.

787490291780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8445 (or 8443 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 62.

The spelling of 787490291780 in words is "seven hundred eighty-seven billion, four hundred ninety million, two hundred ninety-one thousand, seven hundred eighty".