64959621454 has 16 divisors (see below), whose sum is σ = 119925455328. Its totient is φ = 25698311712.

The previous prime is 64959621409. The next prime is 64959621481. The reversal of 64959621454 is 45412695946.

It is a junction number, because it is equal to n+sod(n) for n = 64959621395 and 64959621404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178460317 + ... + 178460680.

It is an arithmetic number, because the mean of its divisors is an integer number (7495340958).

Almost surely, 2^64959621454 is an apocalyptic number.

64959621454 is a deficient number, since it is larger than the sum of its proper divisors (54965833874).

64959621454 is a wasteful number, since it uses less digits than its factorization.

64959621454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356921019.

The product of its digits is 9331200, while the sum is 55.

The spelling of 64959621454 in words is "sixty-four billion, nine hundred fifty-nine million, six hundred twenty-one thousand, four hundred fifty-four".