64100040445 has 32 divisors (see below), whose sum is σ = 90473340672. Its totient is φ = 42683784192.

The previous prime is 64100040419. The next prime is 64100040469. The reversal of 64100040445 is 54404000146.

It is not a de Polignac number, because 64100040445 - 2⁹ = 64100039933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137269 + ... + 383461.

It is an arithmetic number, because the mean of its divisors is an integer number (2827291896).

Almost surely, 2^64100040445 is an apocalyptic number.

It is an amenable number.

64100040445 is a deficient number, since it is larger than the sum of its proper divisors (26373300227).

64100040445 is a wasteful number, since it uses less digits than its factorization.

64100040445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246421.

The product of its (nonzero) digits is 7680, while the sum is 28.

The spelling of 64100040445 in words is "sixty-four billion, one hundred million, forty thousand, four hundred forty-five".