6490136502 has 80 divisors (see below), whose sum is σ = 15158787072. Its totient is φ = 2073101040.

The previous prime is 6490136491. The next prime is 6490136539. The reversal of 6490136502 is 2056310946.

It is a happy number.

6490136502 is a `hidden beast` number, since 64 + 90 + 1 + 3 + 6 + 502 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 510993 + ... + 523539.

Almost surely, 2^6490136502 is an apocalyptic number.

6490136502 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6490136502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7579393536).

6490136502 is an abundant number, since it is smaller than the sum of its proper divisors (8668650570).

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

6490136502 is a wasteful number, since it uses less digits than its factorization.

6490136502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12695 (or 12686 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6490136502 is about 80561.3834414479. The cubic root of 6490136502 is about 1865.3111103539.

The spelling of 6490136502 in words is "six billion, four hundred ninety million, one hundred thirty-six thousand, five hundred two".