135836249640 has 192 divisors, whose sum is σ = 510505752960. Its totient is φ = 28659939840.

The previous prime is 135836249617. The next prime is 135836249641. The reversal of 135836249640 is 46942638531.

135836249640 = 17330² + 17331² + ... + 17770².

It is not an unprimeable number, because it can be changed into a prime (135836249641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 812076 + ... + 964955.

It is an arithmetic number, because the mean of its divisors is an integer number (2658884130).

Almost surely, 2^135836249640 is an apocalyptic number.

135836249640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135836249640 is an abundant number, since it is smaller than the sum of its proper divisors (374669503320).

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

135836249640 is a wasteful number, since it uses less digits than its factorization.

135836249640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777072 (or 1777061 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 135836249640 in words is "one hundred thirty-five billion, eight hundred thirty-six million, two hundred forty-nine thousand, six hundred forty".