3540978815730 has 16 divisors (see below), whose sum is σ = 8498349157824. Its totient is φ = 944261017520.

The previous prime is 3540978815719. The next prime is 3540978815749. The reversal of 3540978815730 is 375188790453.

It is a happy number.

3540978815730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59016313566 + ... + 59016313625.

It is an arithmetic number, because the mean of its divisors is an integer number (531146822364).

Almost surely, 2^{3540978815730} is an apocalyptic number.

3540978815730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3540978815730 is an abundant number, since it is smaller than the sum of its proper divisors (4957370342094).

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

3540978815730 is a wasteful number, since it uses less digits than its factorization.

3540978815730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118032627201.

The product of its (nonzero) digits is 25401600, while the sum is 60.

The spelling of 3540978815730 in words is "three trillion, five hundred forty billion, nine hundred seventy-eight million, eight hundred fifteen thousand, seven hundred thirty".