1540355026236 has 96 divisors (see below), whose sum is σ = 3928904947968. Its totient is φ = 466854312960.

The previous prime is 1540355026229. The next prime is 1540355026241. The reversal of 1540355026236 is 6326205530451.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4186971 + ... + 4539981.

It is an arithmetic number, because the mean of its divisors is an integer number (40926093208).

Almost surely, 2^{1540355026236} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1540355026236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964452473984).

1540355026236 is an abundant number, since it is smaller than the sum of its proper divisors (2388549921732).

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

1540355026236 is a wasteful number, since it uses less digits than its factorization.

1540355026236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353451 (or 353449 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 1540355026236 in words is "one trillion, five hundred forty billion, three hundred fifty-five million, twenty-six thousand, two hundred thirty-six".