78285461900 has 36 divisors (see below), whose sum is σ = 169893058440. Its totient is φ = 31311676800.

The previous prime is 78285461897. The next prime is 78285461921. The reversal of 78285461900 is 916458287.

It is a super-2 number, since 2×78285461900² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1698155 + ... + 1743645.

Almost surely, 2^78285461900 is an apocalyptic number.

It is an amenable number.

78285461900 is an abundant number, since it is smaller than the sum of its proper divisors (91607596540).

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

78285461900 is a wasteful number, since it uses less digits than its factorization.

78285461900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62714 (or 62707 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 78285461900 in words is "seventy-eight billion, two hundred eighty-five million, four hundred sixty-one thousand, nine hundred".