78502310246220 has 192 divisors, whose sum is σ = 266312288664576. Its totient is φ = 16867067166720.

The previous prime is 78502310246201. The next prime is 78502310246351. The reversal of 78502310246220 is 2264201320587.

It is a super-2 number, since 2×78502310246220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 987957 + ... + 12569036.

It is an arithmetic number, because the mean of its divisors is an integer number (1387043170128).

Almost surely, 2^{78502310246220} is an apocalyptic number.

78502310246220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78502310246220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133156144332288).

78502310246220 is an abundant number, since it is smaller than the sum of its proper divisors (187809978418356).

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

78502310246220 is a wasteful number, since it uses less digits than its factorization.

78502310246220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13557840 (or 13557838 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 78502310246220 in words is "seventy-eight trillion, five hundred two billion, three hundred ten million, two hundred forty-six thousand, two hundred twenty".