78811962271420 has 48 divisors (see below), whose sum is σ = 190916454435840. Its totient is φ = 26768709209664.

The previous prime is 78811962271411. The next prime is 78811962271429. The reversal of 78811962271420 is 2417226911887.

It is an interprime number because it is at equal distance from previous prime (78811962271411) and next prime (78811962271429).

It is a super-2 number, since 2×78811962271420² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78811962271429) 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, 2630557860 + ... + 2630587819.

It is an arithmetic number, because the mean of its divisors is an integer number (3977426134080).

Almost surely, 2^{78811962271420} is an apocalyptic number.

78811962271420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78811962271420 is an abundant number, since it is smaller than the sum of its proper divisors (112104492164420).

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

78811962271420 is a wasteful number, since it uses less digits than its factorization.

78811962271420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5261145802 (or 5261145800 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 58.

The spelling of 78811962271420 in words is "seventy-eight trillion, eight hundred eleven billion, nine hundred sixty-two million, two hundred seventy-one thousand, four hundred twenty".