21501031014053 has 8 divisors (see below), whose sum is σ = 22012331886336. Its totient is φ = 20990242728000.

The previous prime is 21501031014049. The next prime is 21501031014077. The reversal of 21501031014053 is 35041013010512.

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 21501031014053 - 2² = 21501031014049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21501031013053) 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, 128061668 + ... + 128229453.

It is an arithmetic number, because the mean of its divisors is an integer number (2751541485792).

Almost surely, 2^{21501031014053} is an apocalyptic number.

It is an amenable number.

21501031014053 is a deficient number, since it is larger than the sum of its proper divisors (511300872283).

21501031014053 is a wasteful number, since it uses less digits than its factorization.

21501031014053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256293115.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 21501031014053 its reverse (35041013010512), we get a palindrome (56542044024565).

The spelling of 21501031014053 in words is "twenty-one trillion, five hundred one billion, thirty-one million, fourteen thousand, fifty-three".