6448751407 has 16 divisors (see below), whose sum is σ = 7507156480. Its totient is φ = 5425234848.

The previous prime is 6448751401. The next prime is 6448751437. The reversal of 6448751407 is 7041578446.

It is a cyclic number.

It is not a de Polignac number, because 6448751407 - 2³ = 6448751399 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 (6448751401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105094 + ... + 154732.

It is an arithmetic number, because the mean of its divisors is an integer number (469197280).

Almost surely, 2^6448751407 is an apocalyptic number.

6448751407 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6448751407 is a deficient number, since it is larger than the sum of its proper divisors (1058405073).

6448751407 is a wasteful number, since it uses less digits than its factorization.

6448751407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49990.

The product of its (nonzero) digits is 752640, while the sum is 46.

The square root of 6448751407 is about 80304.1182443341. The cubic root of 6448751407 is about 1861.3378634411.

The spelling of 6448751407 in words is "six billion, four hundred forty-eight million, seven hundred fifty-one thousand, four hundred seven".