53746367741021 has 4 divisors (see below), whose sum is σ = 53780975835132. Its totient is φ = 53711759646912.

The previous prime is 53746367741009. The next prime is 53746367741029. The reversal of 53746367741021 is 12014776364735.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25779076836100 + 27967290904921 = 5077310^2 + 5288411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53746367741021 is a prime.

It is a super-2 number, since 2×53746367741021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53746367741029) 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, 17304044726 + ... + 17304047831.

It is an arithmetic number, because the mean of its divisors is an integer number (13445243958783).

Almost surely, 2^{53746367741021} is an apocalyptic number.

It is an amenable number.

53746367741021 is a deficient number, since it is larger than the sum of its proper divisors (34608094111).

53746367741021 is a wasteful number, since it uses less digits than its factorization.

53746367741021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34608094110.

The product of its (nonzero) digits is 17781120, while the sum is 56.

The spelling of 53746367741021 in words is "fifty-three trillion, seven hundred forty-six billion, three hundred sixty-seven million, seven hundred forty-one thousand, twenty-one".