650028861378 has 64 divisors (see below), whose sum is σ = 1555770988800. Its totient is φ = 199990062720.

The previous prime is 650028861347. The next prime is 650028861379. The reversal of 650028861378 is 873168820056.

650028861378 is a `hidden beast` number, since 6 + 500 + 2 + 8 + 8 + 61 + 3 + 78 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (650028861379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8661118 + ... + 8735846.

It is an arithmetic number, because the mean of its divisors is an integer number (24308921700).

Almost surely, 2^650028861378 is an apocalyptic number.

650028861378 is an abundant number, since it is smaller than the sum of its proper divisors (905742127422).

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

650028861378 is a wasteful number, since it uses less digits than its factorization.

650028861378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87144 (or 87138 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 650028861378 in words is "six hundred fifty billion, twenty-eight million, eight hundred sixty-one thousand, three hundred seventy-eight".