787149386562 has 128 divisors (see below), whose sum is σ = 1989217751040. Its totient is φ = 201713437440.

The previous prime is 787149386549. The next prime is 787149386587. The reversal of 787149386562 is 265683941787.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 787149386493 and 787149386502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12769888 + ... + 12831380.

It is an arithmetic number, because the mean of its divisors is an integer number (15540763680).

Almost surely, 2^787149386562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 787149386562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994608875520).

787149386562 is an abundant number, since it is smaller than the sum of its proper divisors (1202068364478).

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

787149386562 is a wasteful number, since it uses less digits than its factorization.

787149386562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61888.

The product of its digits is 121927680, while the sum is 66.

It can be divided in two parts, 7871493 and 86562, that added together give a triangular number (7958055 = T₃₉₈₉).

The spelling of 787149386562 in words is "seven hundred eighty-seven billion, one hundred forty-nine million, three hundred eighty-six thousand, five hundred sixty-two".