418465640768 has 56 divisors (see below), whose sum is σ = 950133727872. Its totient is φ = 179132004864.

The previous prime is 418465640713. The next prime is 418465640783. The reversal of 418465640768 is 867046564814.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×418465640768² (a number of 24 digits) contains 22 as substring.

It is a congruent 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, 165380 + ... + 929667.

It is an arithmetic number, because the mean of its divisors is an integer number (16966673712).

Almost surely, 2^418465640768 is an apocalyptic number.

It is an amenable number.

418465640768 is an abundant number, since it is smaller than the sum of its proper divisors (531668087104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

418465640768 is a wasteful number, since it uses less digits than its factorization.

418465640768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095919 (or 1095909 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 59.

The spelling of 418465640768 in words is "four hundred eighteen billion, four hundred sixty-five million, six hundred forty thousand, seven hundred sixty-eight".