820196503776 has 96 divisors (see below), whose sum is σ = 2576258284320. Its totient is φ = 252368151552.

The previous prime is 820196503759. The next prime is 820196503799. The reversal of 820196503776 is 677305691028.

820196503776 is a `hidden beast` number, since 8 + 201 + 9 + 65 + 0 + 377 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 36500365 + ... + 36522828.

It is an arithmetic number, because the mean of its divisors is an integer number (26836023795).

Almost surely, 2^820196503776 is an apocalyptic number.

It is an amenable number.

820196503776 is an abundant number, since it is smaller than the sum of its proper divisors (1756061780544).

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

820196503776 is a wasteful number, since it uses less digits than its factorization.

820196503776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73023225 (or 73023211 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 820196503776 in words is "eight hundred twenty billion, one hundred ninety-six million, five hundred three thousand, seven hundred seventy-six".