613975923145 has 16 divisors (see below), whose sum is σ = 793463947920. Its totient is φ = 453387239424.

The previous prime is 613975923103. The next prime is 613975923173. The reversal of 613975923145 is 541329579316.

It can be written as a sum of positive squares in 8 ways, for example, as 69702336144 + 544273587001 = 264012^2 + 737749^2 .

It is a cyclic number.

It is not a de Polignac number, because 613975923145 - 2¹³ = 613975914953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3883401 + ... + 4038409.

It is an arithmetic number, because the mean of its divisors is an integer number (49591496745).

Almost surely, 2^613975923145 is an apocalyptic number.

613975923145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

613975923145 is a deficient number, since it is larger than the sum of its proper divisors (179488024775).

613975923145 is a wasteful number, since it uses less digits than its factorization.

613975923145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215964.

The product of its digits is 6123600, while the sum is 55.

The spelling of 613975923145 in words is "six hundred thirteen billion, nine hundred seventy-five million, nine hundred twenty-three thousand, one hundred forty-five".