671045121100 has 72 divisors (see below), whose sum is σ = 1498333506768. Its totient is φ = 260745888000.

The previous prime is 671045121053. The next prime is 671045121101. The reversal of 671045121100 is 1121540176.

It is a super-2 number, since 2×671045121100² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671045121101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91494 + ... + 1162093.

It is an arithmetic number, because the mean of its divisors is an integer number (20810187594).

Almost surely, 2^671045121100 is an apocalyptic number.

It is an amenable number.

671045121100 is an abundant number, since it is smaller than the sum of its proper divisors (827288385668).

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

671045121100 is a wasteful number, since it uses less digits than its factorization.

671045121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253755 (or 1253748 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

Adding to 671045121100 its reverse (1121540176), we get a palindrome (672166661276).

The spelling of 671045121100 in words is "six hundred seventy-one billion, forty-five million, one hundred twenty-one thousand, one hundred".