64037434540 has 24 divisors (see below), whose sum is σ = 134512175952. Its totient is φ = 25608580800.

The previous prime is 64037434537. The next prime is 64037434541. The reversal of 64037434540 is 4543473046.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64037434493 and 64037434502.

It is not an unprimeable number, because it can be changed into a prime (64037434541) 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, 317011 + ... + 478090.

It is an arithmetic number, because the mean of its divisors is an integer number (5604673998).

Almost surely, 2^64037434540 is an apocalyptic number.

It is an amenable number.

64037434540 is an abundant number, since it is smaller than the sum of its proper divisors (70474741412).

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

64037434540 is a wasteful number, since it uses less digits than its factorization.

64037434540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799137 (or 799135 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 40.

The spelling of 64037434540 in words is "sixty-four billion, thirty-seven million, four hundred thirty-four thousand, five hundred forty".