781049970352 has 10 divisors (see below), whose sum is σ = 1513284317588. Its totient is φ = 390524985168.

The previous prime is 781049970343. The next prime is 781049970359. The reversal of 781049970352 is 253079940187.

It is a happy number.

It is a super-2 number, since 2×781049970352² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 781049970293 and 781049970302.

It is not an unprimeable number, because it can be changed into a prime (781049970359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24407811558 + ... + 24407811589.

Almost surely, 2^781049970352 is an apocalyptic number.

It is an amenable number.

781049970352 is a deficient number, since it is larger than the sum of its proper divisors (732234347236).

781049970352 is a wasteful number, since it uses less digits than its factorization.

781049970352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48815623155 (or 48815623149 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 781049970352 in words is "seven hundred eighty-one billion, forty-nine million, nine hundred seventy thousand, three hundred fifty-two".