1671421614500 has 384 divisors, whose sum is σ = 4335704755200. Its totient is φ = 556093440000.

The previous prime is 1671421614497. The next prime is 1671421614503. The reversal of 1671421614500 is 54161241761.

It is an interprime number because it is at equal distance from previous prime (1671421614497) and next prime (1671421614503).

It is a super-2 number, since 2×1671421614500² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1671421614503) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 484608776 + ... + 484612224.

It is an arithmetic number, because the mean of its divisors is an integer number (11290897800).

Almost surely, 2^{1671421614500} is an apocalyptic number.

1671421614500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1671421614500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167852377600).

1671421614500 is an abundant number, since it is smaller than the sum of its proper divisors (2664283140700).

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

1671421614500 is a wasteful number, since it uses less digits than its factorization.

1671421614500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640 (or 3628 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 1671421614500 in words is "one trillion, six hundred seventy-one billion, four hundred twenty-one million, six hundred fourteen thousand, five hundred".