2497145372065 has 8 divisors (see below), whose sum is σ = 2999398745448. Its totient is φ = 1995833431680.

The previous prime is 2497145372011. The next prime is 2497145372159. The reversal of 2497145372065 is 5602735417942.

It can be written as a sum of positive squares in 4 ways, for example, as 393438799009 + 2103706573056 = 627247^2 + 1450416^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2497145372065 - 2²³ = 2497136983457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2497145371997 and 2497145372015.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235352412 + ... + 235363021.

It is an arithmetic number, because the mean of its divisors is an integer number (374924843181).

Almost surely, 2^{2497145372065} is an apocalyptic number.

It is an amenable number.

2497145372065 is a deficient number, since it is larger than the sum of its proper divisors (502253373383).

2497145372065 is a wasteful number, since it uses less digits than its factorization.

2497145372065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470716499.

The product of its (nonzero) digits is 12700800, while the sum is 55.

It can be divided in two parts, 2497145 and 372065, that added together give a triangular number (2869210 = T₂₃₉₅).

The spelling of 2497145372065 in words is "two trillion, four hundred ninety-seven billion, one hundred forty-five million, three hundred seventy-two thousand, sixty-five".