1374477209161 has 9 divisors (see below), whose sum is σ = 1598891198061. Its totient is φ = 1178116287852.

The previous prime is 1374477209153. The next prime is 1374477209213. The reversal of 1374477209161 is 1619027744731.

The square root of 1374477209161 is 1172381.

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

It is not a de Polignac number, because 1374477209161 - 2³ = 1374477209153 is a prime.

It is a super-2 number, since 2×1374477209161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1374477209099 and 1374477209108.

It is not an unprimeable number, because it can be changed into a prime (1374477209141) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8122926 + ... + 8290408.

Almost surely, 2^{1374477209161} is an apocalyptic number.

1374477209161 is the 1172381-st square number.

1374477209161 is the 586191-st centered octagonal number.

It is an amenable number.

1374477209161 is a deficient number, since it is larger than the sum of its proper divisors (224413988900).

1374477209161 is an frugal number, since it uses more digits than its factorization.

1374477209161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334980 (or 167490 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 1374477209161 in words is "one trillion, three hundred seventy-four billion, four hundred seventy-seven million, two hundred nine thousand, one hundred sixty-one".