64470215135040 has 224 divisors, whose sum is σ = 240478411372416. Its totient is φ = 14426901258240.

The previous prime is 64470215134993. The next prime is 64470215135093. The reversal of 64470215135040 is 4053151207446.

It is a junction number, because it is equal to n+sod(n) for n = 64470215134983 and 64470215135001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234675567 + ... + 234950126.

It is an arithmetic number, because the mean of its divisors is an integer number (1073564336484).

Almost surely, 2^{64470215135040} is an apocalyptic number.

64470215135040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64470215135040 is an abundant number, since it is smaller than the sum of its proper divisors (176008196237376).

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

64470215135040 is a wasteful number, since it uses less digits than its factorization.

64470215135040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469625737 (or 469625727 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 64470215135040 in words is "sixty-four trillion, four hundred seventy billion, two hundred fifteen million, one hundred thirty-five thousand, forty".