851448911092 has 54 divisors (see below), whose sum is σ = 1645273357602. Its totient is φ = 383268787200.

The previous prime is 851448911083. The next prime is 851448911111. The reversal of 851448911092 is 290119844158.

It can be written as a sum of positive squares in 9 ways, for example, as 756019816036 + 95429095056 = 869494^2 + 308916^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 272811292 + ... + 272814412.

Almost surely, 2^851448911092 is an apocalyptic number.

851448911092 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

851448911092 is a deficient number, since it is larger than the sum of its proper divisors (793824446510).

851448911092 is an equidigital number, since it uses as much as digits as its factorization.

851448911092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341 (or 3177 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 52.

Multiplying 851448911092 by its sum of digits (52), we get a square (44275343376784 = 6653972²).

851448911092 divided by its sum of digits (52) gives a square (16374017521 = 127961²).

The spelling of 851448911092 in words is "eight hundred fifty-one billion, four hundred forty-eight million, nine hundred eleven thousand, ninety-two".