671748608451 has 32 divisors (see below), whose sum is σ = 969386688000. Its totient is φ = 412498614528.

The previous prime is 671748608383. The next prime is 671748608471. The reversal of 671748608451 is 154806847176.

671748608451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671748608451 - 2²⁷ = 671614390723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 671748608391 and 671748608400.

It is not an unprimeable number, because it can be changed into a prime (671748608471) 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, 315495 + ... + 1201263.

It is an arithmetic number, because the mean of its divisors is an integer number (30293334000).

Almost surely, 2^671748608451 is an apocalyptic number.

671748608451 is a deficient number, since it is larger than the sum of its proper divisors (297638079549).

671748608451 is a wasteful number, since it uses less digits than its factorization.

671748608451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886203.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 671748608451 in words is "six hundred seventy-one billion, seven hundred forty-eight million, six hundred eight thousand, four hundred fifty-one".