64373949072291 has 4 divisors (see below), whose sum is σ = 85831932096392. Its totient is φ = 42915966048192.

The previous prime is 64373949072283. The next prime is 64373949072371. The reversal of 64373949072291 is 19227094937346.

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

It is not a de Polignac number, because 64373949072291 - 2³ = 64373949072283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64373949072091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10728991512046 + ... + 10728991512051.

It is an arithmetic number, because the mean of its divisors is an integer number (21457983024098).

Almost surely, 2^{64373949072291} is an apocalyptic number.

64373949072291 is a deficient number, since it is larger than the sum of its proper divisors (21457983024101).

64373949072291 is a wasteful number, since it uses less digits than its factorization.

64373949072291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21457983024100.

The product of its (nonzero) digits is 123451776, while the sum is 66.

The spelling of 64373949072291 in words is "sixty-four trillion, three hundred seventy-three billion, nine hundred forty-nine million, seventy-two thousand, two hundred ninety-one".