26155220340 has 24 divisors (see below), whose sum is σ = 73234617120. Its totient is φ = 6974725408.

The previous prime is 26155220327. The next prime is 26155220347. The reversal of 26155220340 is 4302255162.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 26155220298 and 26155220307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26155220347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217960110 + ... + 217960229.

It is an arithmetic number, because the mean of its divisors is an integer number (3051442380).

Almost surely, 2^26155220340 is an apocalyptic number.

26155220340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26155220340 is an abundant number, since it is smaller than the sum of its proper divisors (47079396780).

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

26155220340 is a wasteful number, since it uses less digits than its factorization.

26155220340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435920351 (or 435920349 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 26155220340 in words is "twenty-six billion, one hundred fifty-five million, two hundred twenty thousand, three hundred forty".