671062263144 has 128 divisors (see below), whose sum is σ = 2073447936000. Its totient is φ = 176242800384.

The previous prime is 671062263097. The next prime is 671062263161. The reversal of 671062263144 is 441362260176.

It is a happy number.

671062263144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×671062263144² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 671062263096 and 671062263105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120834 + ... + 1164785.

It is an arithmetic number, because the mean of its divisors is an integer number (16198812000).

Almost surely, 2^671062263144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671062263144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036723968000).

671062263144 is an abundant number, since it is smaller than the sum of its proper divisors (1402385672856).

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

671062263144 is a wasteful number, since it uses less digits than its factorization.

671062263144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285887 (or 1285883 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 671062263144 in words is "six hundred seventy-one billion, sixty-two million, two hundred sixty-three thousand, one hundred forty-four".