786704531939448 has 128 divisors (see below), whose sum is σ = 2025189387555840. Its totient is φ = 254538977472000.

The previous prime is 786704531939371. The next prime is 786704531939489. The reversal of 786704531939448 is 844939135407687.

It is a Sastry number since concatenated with its successor gives a square.

It is a congruent number.

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, 237889758 + ... + 241174098.

It is an arithmetic number, because the mean of its divisors is an integer number (15821792090280).

Almost surely, 2^{786704531939448} 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 786704531939448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1012594693777920).

786704531939448 is an abundant number, since it is smaller than the sum of its proper divisors (1238484855616392).

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

786704531939448 is a wasteful number, since it uses less digits than its factorization.

786704531939448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286149 (or 3286145 counting only the distinct ones).

The product of its (nonzero) digits is 4389396480, while the sum is 78.

The spelling of 786704531939448 in words is "seven hundred eighty-six trillion, seven hundred four billion, five hundred thirty-one million, nine hundred thirty-nine thousand, four hundred forty-eight".