851394500024 has 8 divisors (see below), whose sum is σ = 1596364687560. Its totient is φ = 425697250008.

The previous prime is 851394499961. The next prime is 851394500069. The reversal of 851394500024 is 420005493158.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×851394500024² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53212156244 + ... + 53212156259.

It is an arithmetic number, because the mean of its divisors is an integer number (199545585945).

Almost surely, 2^851394500024 is an apocalyptic number.

It is an amenable number.

851394500024 is a deficient number, since it is larger than the sum of its proper divisors (744970187536).

851394500024 is a wasteful number, since it uses less digits than its factorization.

851394500024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106424312509 (or 106424312505 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 851394500024 in words is "eight hundred fifty-one billion, three hundred ninety-four million, five hundred thousand, twenty-four".