65474338020 has 576 divisors, whose sum is σ = 240637372416. Its totient is φ = 13168189440.

The previous prime is 65474338019. The next prime is 65474338021. The reversal of 65474338020 is 2083347456.

It is an interprime number because it is at equal distance from previous prime (65474338019) and next prime (65474338021).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (65474338021) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 86491482 + ... + 86492238.

It is an arithmetic number, because the mean of its divisors is an integer number (417773216).

Almost surely, 2^65474338020 is an apocalyptic number.

65474338020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65474338020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120318686208).

65474338020 is an abundant number, since it is smaller than the sum of its proper divisors (175163034396).

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

65474338020 is a wasteful number, since it uses less digits than its factorization.

65474338020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 65474338020 in words is "sixty-five billion, four hundred seventy-four million, three hundred thirty-eight thousand, twenty".