1671604880490 has 112 divisors (see below), whose sum is σ = 4587732842400. Its totient is φ = 438205912416.

The previous prime is 1671604880447. The next prime is 1671604880507. The reversal of 1671604880490 is 940884061761.

1671604880490 is a `hidden beast` number, since 1 + 6 + 71 + 6 + 0 + 4 + 8 + 80 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1513120 + ... + 2373339.

Almost surely, 2^{1671604880490} is an apocalyptic number.

1671604880490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1671604880490 is an abundant number, since it is smaller than the sum of its proper divisors (2916127961910).

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

1671604880490 is an equidigital number, since it uses as much as digits as its factorization.

1671604880490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886543 (or 3886528 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 1671604880490 in words is "one trillion, six hundred seventy-one billion, six hundred four million, eight hundred eighty thousand, four hundred ninety".