64554452402 has 16 divisors (see below), whose sum is σ = 111194272800. Its totient is φ = 27798567840.

The previous prime is 64554452387. The next prime is 64554452407. The reversal of 64554452402 is 20425445546.

It is a self number, because there is not a number n which added to its sum of digits gives 64554452402.

It is not an unprimeable number, because it can be changed into a prime (64554452407) 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, 77217827 + ... + 77218662.

It is an arithmetic number, because the mean of its divisors is an integer number (6949642050).

Almost surely, 2^64554452402 is an apocalyptic number.

64554452402 is a deficient number, since it is larger than the sum of its proper divisors (46639820398).

64554452402 is a wasteful number, since it uses less digits than its factorization.

64554452402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154436521.

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 64554452402 its reverse (20425445546), we get a palindrome (84979897948).

The spelling of 64554452402 in words is "sixty-four billion, five hundred fifty-four million, four hundred fifty-two thousand, four hundred two".