6415445461 has 8 divisors (see below), whose sum is σ = 6514504920. Its totient is φ = 6317058048.

The previous prime is 6415445441. The next prime is 6415445479. The reversal of 6415445461 is 1645445146.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 851180625 + 5564264836 = 29175^2 + 74594^2 .

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 6415445461 - 2¹³ = 6415437269 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 (6415445401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148756 + ... + 186973.

It is an arithmetic number, because the mean of its divisors is an integer number (814313115).

Almost surely, 2^6415445461 is an apocalyptic number.

It is an amenable number.

6415445461 is a deficient number, since it is larger than the sum of its proper divisors (99059459).

6415445461 is a wasteful number, since it uses less digits than its factorization.

6415445461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336023.

The product of its digits is 230400, while the sum is 40.

The square root of 6415445461 is about 80096.4759586837. The cubic root of 6415445461 is about 1858.1279060330.

The spelling of 6415445461 in words is "six billion, four hundred fifteen million, four hundred forty-five thousand, four hundred sixty-one".