26515030340 has 12 divisors (see below), whose sum is σ = 55681563756. Its totient is φ = 10606012128.

The previous prime is 26515030303. The next prime is 26515030363. The reversal of 26515030340 is 4303051562.

It can be written as a sum of positive squares in 2 ways, for example, as 4068398656 + 22446631684 = 63784^2 + 149822^2 .

It is a super-2 number, since 2×26515030340² (a number of 22 digits) contains 22 as substring.

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, 662875739 + ... + 662875778.

It is an arithmetic number, because the mean of its divisors is an integer number (4640130313).

Almost surely, 2^26515030340 is an apocalyptic number.

26515030340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26515030340 is an abundant number, since it is smaller than the sum of its proper divisors (29166533416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26515030340 is a wasteful number, since it uses less digits than its factorization.

26515030340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325751526 (or 1325751524 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 26515030340 in words is "twenty-six billion, five hundred fifteen million, thirty thousand, three hundred forty".