290861196491900 has 144 divisors (see below), whose sum is σ = 651666767428320. Its totient is φ = 112600023782400.

The previous prime is 290861196491897. The next prime is 290861196491909. The reversal of 290861196491900 is 9194691168092.

It is a super-2 number, since 2×290861196491900² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290861196491909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1396568174 + ... + 1396776426.

Almost surely, 2^{290861196491900} is an apocalyptic number.

290861196491900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290861196491900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325833383714160).

290861196491900 is an abundant number, since it is smaller than the sum of its proper divisors (360805570936420).

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

290861196491900 is a wasteful number, since it uses less digits than its factorization.

290861196491900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210304 (or 210297 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 65.

The spelling of 290861196491900 in words is "two hundred ninety trillion, eight hundred sixty-one billion, one hundred ninety-six million, four hundred ninety-one thousand, nine hundred".