904155551409 has 24 divisors (see below), whose sum is σ = 1327998296800. Its totient is φ = 546773895360.

The previous prime is 904155551287. The next prime is 904155551423.

904155551409 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 904155551409 - 2¹³ = 904155543217 is a prime.

It is a super-2 number, since 2×904155551409² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (904155551479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2559259 + ... + 2891040.

Almost surely, 2^904155551409 is an apocalyptic number.

It is an amenable number.

904155551409 is a deficient number, since it is larger than the sum of its proper divisors (423842745391).

904155551409 is a wasteful number, since it uses less digits than its factorization.

904155551409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450781 (or 5450770 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 904155551409 in words is "nine hundred four billion, one hundred fifty-five million, five hundred fifty-one thousand, four hundred nine".