71450402621261 has 64 divisors (see below), whose sum is σ = 74363529461760. Its totient is φ = 68624967640320.

The previous prime is 71450402621189. The next prime is 71450402621267. The reversal of 71450402621261 is 16212620405417.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 71450402621261 - 2²⁶ = 71450335512397 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 (71450402621267) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 105539737655 + ... + 105539738331.

It is an arithmetic number, because the mean of its divisors is an integer number (1161930147840).

Almost surely, 2^{71450402621261} is an apocalyptic number.

71450402621261 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

71450402621261 is a deficient number, since it is larger than the sum of its proper divisors (2913126840499).

71450402621261 is a wasteful number, since it uses less digits than its factorization.

71450402621261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 71450402621261 in words is "seventy-one trillion, four hundred fifty billion, four hundred two million, six hundred twenty-one thousand, two hundred sixty-one".