10091020494 has 16 divisors (see below), whose sum is σ = 20381864400. Its totient is φ = 3330369600.

The previous prime is 10091020493. The next prime is 10091020507. The reversal of 10091020494 is 49402019001.

It is a super-2 number, since 2×10091020494² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10091020493) 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, 8325319 + ... + 8326530.

It is an arithmetic number, because the mean of its divisors is an integer number (1273866525).

Almost surely, 2^10091020494 is an apocalyptic number.

10091020494 is an abundant number, since it is smaller than the sum of its proper divisors (10290843906).

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

10091020494 is a wasteful number, since it uses less digits than its factorization.

10091020494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16651955.

The product of its (nonzero) digits is 2592, while the sum is 30.

Adding to 10091020494 its reverse (49402019001), we get a palindrome (59493039495).

The spelling of 10091020494 in words is "ten billion, ninety-one million, twenty thousand, four hundred ninety-four".