65554521450 has 48 divisors (see below), whose sum is σ = 177354782496. Its totient is φ = 15892004800.

The previous prime is 65554521443. The next prime is 65554521479. The reversal of 65554521450 is 5412545556.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19863357 + ... + 19866656.

It is an arithmetic number, because the mean of its divisors is an integer number (3694891302).

Almost surely, 2^65554521450 is an apocalyptic number.

65554521450 is an abundant number, since it is smaller than the sum of its proper divisors (111800261046).

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

65554521450 is a wasteful number, since it uses less digits than its factorization.

65554521450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39730039 (or 39730034 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 65554521450 in words is "sixty-five billion, five hundred fifty-four million, five hundred twenty-one thousand, four hundred fifty".