64620140346870 has 32 divisors (see below), whose sum is σ = 158870979197280. Its totient is φ = 16811743829760.

The previous prime is 64620140346863. The next prime is 64620140346953. The reversal of 64620140346870 is 7864304102646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26268348505 + ... + 26268350964.

It is an arithmetic number, because the mean of its divisors is an integer number (4964718099915).

Almost surely, 2^{64620140346870} is an apocalyptic number.

64620140346870 is an abundant number, since it is smaller than the sum of its proper divisors (94250838850410).

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

64620140346870 is a wasteful number, since it uses less digits than its factorization.

64620140346870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52536699520.

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 64620140346870 in words is "sixty-four trillion, six hundred twenty billion, one hundred forty million, three hundred forty-six thousand, eight hundred seventy".