64471226961 has 8 divisors (see below), whose sum is σ = 85974991200. Its totient is φ = 42974140352.

The previous prime is 64471226861. The next prime is 64471226977. The reversal of 64471226961 is 16962217446.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64471226961 - 2¹³ = 64471218769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64471226961.

It is not an unprimeable number, because it can be changed into a prime (64471226461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1646835 + ... + 1685528.

It is an arithmetic number, because the mean of its divisors is an integer number (10746873900).

Almost surely, 2^64471226961 is an apocalyptic number.

It is an amenable number.

64471226961 is a deficient number, since it is larger than the sum of its proper divisors (21503764239).

64471226961 is a wasteful number, since it uses less digits than its factorization.

64471226961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338815.

The product of its digits is 870912, while the sum is 48.

The spelling of 64471226961 in words is "sixty-four billion, four hundred seventy-one million, two hundred twenty-six thousand, nine hundred sixty-one".