64035038991 has 16 divisors (see below), whose sum is σ = 106447857408. Its totient is φ = 33264955200.

The previous prime is 64035038941. The next prime is 64035039011. The reversal of 64035038991 is 19983053046.

It is not a de Polignac number, because 64035038991 - 2⁷ = 64035038863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64035038991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64035038941) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 138603750 + ... + 138604211.

It is an arithmetic number, because the mean of its divisors is an integer number (6652991088).

Almost surely, 2^64035038991 is an apocalyptic number.

64035038991 is a deficient number, since it is larger than the sum of its proper divisors (42412818417).

64035038991 is a wasteful number, since it uses less digits than its factorization.

64035038991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277207982.

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 64035038991 in words is "sixty-four billion, thirty-five million, thirty-eight thousand, nine hundred ninety-one".