26390150015240 has 128 divisors (see below), whose sum is σ = 68190356736000. Its totient is φ = 9090639532800.

The previous prime is 26390150015239. The next prime is 26390150015263. The reversal of 26390150015240 is 4251005109362.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 26390150015194 and 26390150015203.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114241055 + ... + 114471825.

It is an arithmetic number, because the mean of its divisors is an integer number (532737162000).

Almost surely, 2^{26390150015240} is an apocalyptic number.

26390150015240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26390150015240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34095178368000).

26390150015240 is an abundant number, since it is smaller than the sum of its proper divisors (41800206720760).

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

26390150015240 is a wasteful number, since it uses less digits than its factorization.

26390150015240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244491 (or 244487 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 26390150015240 in words is "twenty-six trillion, three hundred ninety billion, one hundred fifty million, fifteen thousand, two hundred forty".