101520042451271 has 16 divisors (see below), whose sum is σ = 104173359206400. Its totient is φ = 98880032011488.

The previous prime is 101520042451249. The next prime is 101520042451277. The reversal of 101520042451271 is 172154240025101.

It is a cyclic number.

It is not a de Polignac number, because 101520042451271 - 2¹⁴ = 101520042434887 is a prime.

It is a super-4 number, since 4×101520042451271⁴ (a number of 57 digits) contains 4444 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 (101520042451277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696429125 + ... + 696574881.

It is an arithmetic number, because the mean of its divisors is an integer number (6510834950400).

Almost surely, 2^{101520042451271} is an apocalyptic number.

101520042451271 is a deficient number, since it is larger than the sum of its proper divisors (2653316755129).

101520042451271 is a wasteful number, since it uses less digits than its factorization.

101520042451271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191278.

The product of its (nonzero) digits is 22400, while the sum is 35.

Adding to 101520042451271 its reverse (172154240025101), we get a palindrome (273674282476372).

The spelling of 101520042451271 in words is "one hundred one trillion, five hundred twenty billion, forty-two million, four hundred fifty-one thousand, two hundred seventy-one".