851421755470 has 32 divisors (see below), whose sum is σ = 1800489085920. Its totient is φ = 285791917440.

The previous prime is 851421755461. The next prime is 851421755501. The reversal of 851421755470 is 74557124158.

851421755470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 297698485 + ... + 297701344.

It is an arithmetic number, because the mean of its divisors is an integer number (56265283935).

Almost surely, 2^851421755470 is an apocalyptic number.

851421755470 is an abundant number, since it is smaller than the sum of its proper divisors (949067330450).

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

851421755470 is a wasteful number, since it uses less digits than its factorization.

851421755470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595399860.

The product of its (nonzero) digits is 1568000, while the sum is 49.

The spelling of 851421755470 in words is "eight hundred fifty-one billion, four hundred twenty-one million, seven hundred fifty-five thousand, four hundred seventy".