2378717051481 has 9 divisors (see below), whose sum is σ = 3435931313269. Its totient is φ = 1585808283036.

The previous prime is 2378717051479. The next prime is 2378717051489. The reversal of 2378717051481 is 1841507178732.

The square root of 2378717051481 is 1542309.

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

2378717051481 is a `hidden beast` number, since 2 + 37 + 8 + 7 + 17 + 0 + 514 + 81 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2378717051481 - 2¹ = 2378717051479 is a prime.

It is a super-2 number, since 2×2378717051481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2378717051489) 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, 4369876 + ... + 4883978.

Almost surely, 2^{2378717051481} is an apocalyptic number.

2378717051481 is the 1542309-th square number.

2378717051481 is the 771155-th centered octagonal number.

It is an amenable number.

2378717051481 is a deficient number, since it is larger than the sum of its proper divisors (1057214261788).

2378717051481 is an frugal number, since it uses more digits than its factorization.

2378717051481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028212 (or 514106 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 54.

The spelling of 2378717051481 in words is "two trillion, three hundred seventy-eight billion, seven hundred seventeen million, fifty-one thousand, four hundred eighty-one".