6401535245 has 16 divisors (see below), whose sum is σ = 8794651008. Its totient is φ = 4381922880.

The previous prime is 6401535241. The next prime is 6401535263. The reversal of 6401535245 is 5425351046.

It is not a de Polignac number, because 6401535245 - 2² = 6401535241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401535241) 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, 140174 + ... + 180143.

It is an arithmetic number, because the mean of its divisors is an integer number (549665688).

Almost surely, 2^6401535245 is an apocalyptic number.

It is an amenable number.

6401535245 is a deficient number, since it is larger than the sum of its proper divisors (2393115763).

6401535245 is a wasteful number, since it uses less digits than its factorization.

6401535245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320900.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 6401535245 is about 80009.5947058851. The cubic root of 6401535245 is about 1856.7839794103.

The spelling of 6401535245 in words is "six billion, four hundred one million, five hundred thirty-five thousand, two hundred forty-five".