2540772085858 has 8 divisors (see below), whose sum is σ = 3914162402652. Its totient is φ = 1236051284976.

The previous prime is 2540772085783. The next prime is 2540772085871. The reversal of 2540772085858 is 8585802770452.

It can be written as a sum of positive squares in 2 ways, for example, as 2497338608209 + 43433477649 = 1580297^2 + 208407^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2540772085796 and 2540772085805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17167378885 + ... + 17167379032.

Almost surely, 2^{2540772085858} is an apocalyptic number.

2540772085858 is a deficient number, since it is larger than the sum of its proper divisors (1373390316794).

2540772085858 is a wasteful number, since it uses less digits than its factorization.

2540772085858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34334757956.

The product of its (nonzero) digits is 50176000, while the sum is 61.

The spelling of 2540772085858 in words is "two trillion, five hundred forty billion, seven hundred seventy-two million, eighty-five thousand, eight hundred fifty-eight".