64709949958 has 4 divisors (see below), whose sum is σ = 97064924940. Its totient is φ = 32354974978.

The previous prime is 64709949949. The next prime is 64709949973. The reversal of 64709949958 is 85994990746.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16177487488 + ... + 16177487491.

It is an arithmetic number, because the mean of its divisors is an integer number (24266231235).

Almost surely, 2^64709949958 is an apocalyptic number.

64709949958 is a deficient number, since it is larger than the sum of its proper divisors (32354974982).

64709949958 is a wasteful number, since it uses less digits than its factorization.

64709949958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32354974981.

The product of its (nonzero) digits is 176359680, while the sum is 70.

The spelling of 64709949958 in words is "sixty-four billion, seven hundred nine million, nine hundred forty-nine thousand, nine hundred fifty-eight".