6402861545 has 8 divisors (see below), whose sum is σ = 7685982024. Its totient is φ = 5120590464.

The previous prime is 6402861403. The next prime is 6402861557. The reversal of 6402861545 is 5451682046.

It can be written as a sum of positive squares in 4 ways, for example, as 2676613696 + 3726247849 = 51736^2 + 61043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6402861545 - 2²⁰ = 6401812969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195644 + ... + 226013.

It is an arithmetic number, because the mean of its divisors is an integer number (960747753).

Almost surely, 2^6402861545 is an apocalyptic number.

It is an amenable number.

6402861545 is a deficient number, since it is larger than the sum of its proper divisors (1283120479).

6402861545 is a wasteful number, since it uses less digits than its factorization.

6402861545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424699.

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 6402861545 is about 80017.8826575660. The cubic root of 6402861545 is about 1856.9122029505.

The spelling of 6402861545 in words is "six billion, four hundred two million, eight hundred sixty-one thousand, five hundred forty-five".