64784250037 has 4 divisors (see below), whose sum is σ = 69767653900. Its totient is φ = 59800846176.

The previous prime is 64784250001. The next prime is 64784250127. The reversal of 64784250037 is 73005248746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8223043761 + 56561206276 = 90681^2 + 237826^2 .

It is a cyclic number.

It is not a de Polignac number, because 64784250037 - 2²³ = 64775861429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64784250137) 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 3 ways as a sum of consecutive naturals, for example, 2491701912 + ... + 2491701937.

It is an arithmetic number, because the mean of its divisors is an integer number (17441913475).

Almost surely, 2^64784250037 is an apocalyptic number.

It is an amenable number.

64784250037 is a deficient number, since it is larger than the sum of its proper divisors (4983403863).

64784250037 is a wasteful number, since it uses less digits than its factorization.

64784250037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983403862.

The product of its (nonzero) digits is 1128960, while the sum is 46.

It can be divided in two parts, 64784 and 250037, that added together give a triangular number (314821 = T₇₉₃).

The spelling of 64784250037 in words is "sixty-four billion, seven hundred eighty-four million, two hundred fifty thousand, thirty-seven".