64400250070 has 32 divisors (see below), whose sum is σ = 124855305120. Its totient is φ = 23775144960.

The previous prime is 64400250067. The next prime is 64400250097. The reversal of 64400250070 is 7005200446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987741 + ... + 1050919.

It is an arithmetic number, because the mean of its divisors is an integer number (3901728285).

Almost surely, 2^64400250070 is an apocalyptic number.

64400250070 is a deficient number, since it is larger than the sum of its proper divisors (60455055050).

64400250070 is a wasteful number, since it uses less digits than its factorization.

64400250070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71040.

The product of its (nonzero) digits is 6720, while the sum is 28.

The spelling of 64400250070 in words is "sixty-four billion, four hundred million, two hundred fifty thousand, seventy".