78252213948 has 48 divisors (see below), whose sum is σ = 183071772576. Its totient is φ = 26015109120.

The previous prime is 78252213943. The next prime is 78252213961. The reversal of 78252213948 is 84931225287.

It is a super-2 number, since 2×78252213948² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78252213948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78252213943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10580940 + ... + 10588332.

It is an arithmetic number, because the mean of its divisors is an integer number (3813995262).

Almost surely, 2^78252213948 is an apocalyptic number.

It is an amenable number.

78252213948 is an abundant number, since it is smaller than the sum of its proper divisors (104819558628).

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

78252213948 is a wasteful number, since it uses less digits than its factorization.

78252213948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9614 (or 9612 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The spelling of 78252213948 in words is "seventy-eight billion, two hundred fifty-two million, two hundred thirteen thousand, nine hundred forty-eight".