71490990415 has 16 divisors (see below), whose sum is σ = 92458090368. Its totient is φ = 52753499136.

The previous prime is 71490990397. The next prime is 71490990449. The reversal of 71490990415 is 51409909417.

It is not a de Polignac number, because 71490990415 - 2¹¹ = 71490988367 is a prime.

It is a super-2 number, since 2×71490990415² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328162 + ... + 500671.

It is an arithmetic number, because the mean of its divisors is an integer number (5778630648).

Almost surely, 2^71490990415 is an apocalyptic number.

71490990415 is a deficient number, since it is larger than the sum of its proper divisors (20967099953).

71490990415 is a wasteful number, since it uses less digits than its factorization.

71490990415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830178.

The product of its (nonzero) digits is 408240, while the sum is 49.

The spelling of 71490990415 in words is "seventy-one billion, four hundred ninety million, nine hundred ninety thousand, four hundred fifteen".