6491101503 has 4 divisors (see below), whose sum is σ = 8654802008. Its totient is φ = 4327401000.

The previous prime is 6491101493. The next prime is 6491101553. The reversal of 6491101503 is 3051011946.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6491101503 - 2⁸ = 6491101247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491101553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081850248 + ... + 1081850253.

It is an arithmetic number, because the mean of its divisors is an integer number (2163700502).

Almost surely, 2^6491101503 is an apocalyptic number.

6491101503 is a deficient number, since it is larger than the sum of its proper divisors (2163700505).

6491101503 is a wasteful number, since it uses less digits than its factorization.

6491101503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163700504.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 6491101503 is about 80567.3724469155. The cubic root of 6491101503 is about 1865.4035551419.

The spelling of 6491101503 in words is "six billion, four hundred ninety-one million, one hundred one thousand, five hundred three".