71494440090 has 16 divisors (see below), whose sum is σ = 171586656288. Its totient is φ = 19065184016.

The previous prime is 71494440079. The next prime is 71494440097. The reversal of 71494440090 is 9004449417.

It is a super-2 number, since 2×71494440090² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (71494440097) 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, 1191573972 + ... + 1191574031.

It is an arithmetic number, because the mean of its divisors is an integer number (10724166018).

Almost surely, 2^71494440090 is an apocalyptic number.

71494440090 is an abundant number, since it is smaller than the sum of its proper divisors (100092216198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71494440090 is a wasteful number, since it uses less digits than its factorization.

71494440090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383148013.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 71494440090 in words is "seventy-one billion, four hundred ninety-four million, four hundred forty thousand, ninety".