53751720641 has 8 divisors (see below), whose sum is σ = 54056677440. Its totient is φ = 53447562288.

The previous prime is 53751720637. The next prime is 53751720643. The reversal of 53751720641 is 14602715735.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53751720641 - 2² = 53751720637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53751720643) 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, 64331 + ... + 334128.

It is an arithmetic number, because the mean of its divisors is an integer number (6757084680).

Almost surely, 2^53751720641 is an apocalyptic number.

It is an amenable number.

53751720641 is a deficient number, since it is larger than the sum of its proper divisors (304956799).

53751720641 is a wasteful number, since it uses less digits than its factorization.

53751720641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399223.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 53751720641 in words is "fifty-three billion, seven hundred fifty-one million, seven hundred twenty thousand, six hundred forty-one".