209903077344 has 48 divisors (see below), whose sum is σ = 551194692048. Its totient is φ = 69942408192.

The previous prime is 209903077271. The next prime is 209903077357. The reversal of 209903077344 is 443770309902.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 209903077293 and 209903077302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127087 + ... + 660270.

It is an arithmetic number, because the mean of its divisors is an integer number (11483222751).

Almost surely, 2^209903077344 is an apocalyptic number.

209903077344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

209903077344 is an abundant number, since it is smaller than the sum of its proper divisors (341291614704).

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

209903077344 is a wasteful number, since it uses less digits than its factorization.

209903077344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790147 (or 790139 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 48.

The spelling of 209903077344 in words is "two hundred nine billion, nine hundred three million, seventy-seven thousand, three hundred forty-four".