6501249051 has 12 divisors (see below), whose sum is σ = 9528001896. Its totient is φ = 3940150720.

The previous prime is 6501249047. The next prime is 6501249107. The reversal of 6501249051 is 1509421056.

It is not a de Polignac number, because 6501249051 - 2² = 6501249047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (6501249011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8954526 + ... + 8955251.

It is an arithmetic number, because the mean of its divisors is an integer number (794000158).

Almost surely, 2^6501249051 is an apocalyptic number.

6501249051 is a deficient number, since it is larger than the sum of its proper divisors (3026752845).

6501249051 is a wasteful number, since it uses less digits than its factorization.

6501249051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17909802 (or 17909791 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 6501249051 is about 80630.3233963501. The cubic root of 6501249051 is about 1866.3751116958.

It can be divided in two parts, 6501 and 249051, that added together give a palindrome (255552).

The spelling of 6501249051 in words is "six billion, five hundred one million, two hundred forty-nine thousand, fifty-one".