1672420554841 has 27 divisors (see below), whose sum is σ = 1780298439199. Its totient is φ = 1570942796192.

The previous prime is 1672420554811. The next prime is 1672420554923. The reversal of 1672420554841 is 1484550242761.

The square root of 1672420554841 is 1293221.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 696482048025 + 975938506816 = 834555^2 + 987896^2 .

It is not a de Polignac number, because 1672420554841 - 2¹¹ = 1672420552793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672420554811) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1754900421 + ... + 1754901373.

Almost surely, 2^{1672420554841} is an apocalyptic number.

1672420554841 is the 1293221-st square number.

1672420554841 is the 646611-st centered octagonal number.

It is an amenable number.

1672420554841 is a deficient number, since it is larger than the sum of its proper divisors (107877884358).

1672420554841 is an frugal number, since it uses more digits than its factorization.

1672420554841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 49.

Multiplying 1672420554841 by its sum of digits (49), we get a square (81948607187209 = 9052547²).

The spelling of 1672420554841 in words is "one trillion, six hundred seventy-two billion, four hundred twenty million, five hundred fifty-four thousand, eight hundred forty-one".