671326125335550 has 72 divisors (see below), whose sum is σ = 1807525052090784. Its totient is φ = 178633647118080.

The previous prime is 671326125335549. The next prime is 671326125335557. The reversal of 671326125335550 is 55533521623176.

671326125335550 is a `hidden beast` number, since 6 + 7 + 1 + 3 + 2 + 6 + 1 + 2 + 53 + 35 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671326125335557) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1610845467 + ... + 1611262166.

It is an arithmetic number, because the mean of its divisors is an integer number (25104514612372).

Almost surely, 2^{671326125335550} is an apocalyptic number.

671326125335550 is an abundant number, since it is smaller than the sum of its proper divisors (1136198926755234).

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

671326125335550 is a wasteful number, since it uses less digits than its factorization.

671326125335550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222108114 (or 3222108106 counting only the distinct ones).

The product of its (nonzero) digits is 17010000, while the sum is 54.

The spelling of 671326125335550 in words is "six hundred seventy-one trillion, three hundred twenty-six billion, one hundred twenty-five million, three hundred thirty-five thousand, five hundred fifty".