64612221270 has 64 divisors (see below), whose sum is σ = 161313120000. Its totient is φ = 16542813056.

The previous prime is 64612221229. The next prime is 64612221307. The reversal of 64612221270 is 7212221646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51720 + ... + 363179.

It is an arithmetic number, because the mean of its divisors is an integer number (2520517500).

Almost surely, 2^64612221270 is an apocalyptic number.

64612221270 is an abundant number, since it is smaller than the sum of its proper divisors (96700898730).

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

64612221270 is a wasteful number, since it uses less digits than its factorization.

64612221270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415117.

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 64612221270 in words is "sixty-four billion, six hundred twelve million, two hundred twenty-one thousand, two hundred seventy".