783871421448 has 32 divisors (see below), whose sum is σ = 1961032944960. Its totient is φ = 261109888320.

The previous prime is 783871421413. The next prime is 783871421471. The reversal of 783871421448 is 844124178387.

It is a super-2 number, since 2×783871421448² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11251143 + ... + 11320598.

It is an arithmetic number, because the mean of its divisors is an integer number (61282279530).

Almost surely, 2^783871421448 is an apocalyptic number.

It is an amenable number.

783871421448 is an abundant number, since it is smaller than the sum of its proper divisors (1177161523512).

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

783871421448 is a wasteful number, since it uses less digits than its factorization.

783871421448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22573197 (or 22573193 counting only the distinct ones).

The product of its digits is 9633792, while the sum is 57.

The spelling of 783871421448 in words is "seven hundred eighty-three billion, eight hundred seventy-one million, four hundred twenty-one thousand, four hundred forty-eight".