78211033012 has 24 divisors (see below), whose sum is σ = 156764371904. Its totient is φ = 33445662912.

The previous prime is 78211033001. The next prime is 78211033067. The reversal of 78211033012 is 21033011287.

It is a super-2 number, since 2×78211033012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 3043278 + ... + 3068869.

Almost surely, 2^78211033012 is an apocalyptic number.

It is an amenable number.

78211033012 is an abundant number, since it is smaller than the sum of its proper divisors (78553338892).

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

78211033012 is a wasteful number, since it uses less digits than its factorization.

78211033012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112615 (or 6112613 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 78211033012 its reverse (21033011287), we get a palindrome (99244044299).

The spelling of 78211033012 in words is "seventy-eight billion, two hundred eleven million, thirty-three thousand, twelve".