2115257265859 has 4 divisors (see below), whose sum is σ = 2117708318016. Its totient is φ = 2112806213704.

The previous prime is 2115257265833. The next prime is 2115257265907. The reversal of 2115257265859 is 9585627525112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2115257265859 - 2⁷ = 2115257265731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115257265659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225524784 + ... + 1225526509.

It is an arithmetic number, because the mean of its divisors is an integer number (529427079504).

Almost surely, 2^{2115257265859} is an apocalyptic number.

2115257265859 is a deficient number, since it is larger than the sum of its proper divisors (2451052157).

2115257265859 is an equidigital number, since it uses as much as digits as its factorization.

2115257265859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451052156.

The product of its digits is 15120000, while the sum is 58.

The spelling of 2115257265859 in words is "two trillion, one hundred fifteen billion, two hundred fifty-seven million, two hundred sixty-five thousand, eight hundred fifty-nine".