64042145654 has 4 divisors (see below), whose sum is σ = 96063218484. Its totient is φ = 32021072826.

The previous prime is 64042145653. The next prime is 64042145669. The reversal of 64042145654 is 45654124046.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64042145653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16010536412 + ... + 16010536415.

It is an arithmetic number, because the mean of its divisors is an integer number (24015804621).

Almost surely, 2^64042145654 is an apocalyptic number.

64042145654 is a deficient number, since it is larger than the sum of its proper divisors (32021072830).

64042145654 is a wasteful number, since it uses less digits than its factorization.

64042145654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32021072829.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 64042145654 in words is "sixty-four billion, forty-two million, one hundred forty-five thousand, six hundred fifty-four".