78536050050020 has 48 divisors (see below), whose sum is σ = 172144746789120. Its totient is φ = 30040132062336.

The previous prime is 78536050049971. The next prime is 78536050050049. The reversal of 78536050050020 is 2005005063587.

It is a super-2 number, since 2×78536050050020² (a number of 29 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 78536050050020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22348607 + ... + 25622886.

It is an arithmetic number, because the mean of its divisors is an integer number (3586348891440).

Almost surely, 2^{78536050050020} is an apocalyptic number.

It is an amenable number.

78536050050020 is an abundant number, since it is smaller than the sum of its proper divisors (93608696739100).

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

78536050050020 is a wasteful number, since it uses less digits than its factorization.

78536050050020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47975084 (or 47975082 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 78536050050020 in words is "seventy-eight trillion, five hundred thirty-six billion, fifty million, fifty thousand, twenty".