30551133919 has 6 divisors (see below), whose sum is σ = 31537658976. Its totient is φ = 29564671680.

The previous prime is 30551133889. The next prime is 30551133973. The reversal of 30551133919 is 91933115503.

It is not a de Polignac number, because 30551133919 - 2¹⁹ = 30550609631 is a prime.

It is a super-2 number, since 2×30551133919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30551133419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 957487 + ... + 988879.

It is an arithmetic number, because the mean of its divisors is an integer number (5256276496).

Almost surely, 2^30551133919 is an apocalyptic number.

30551133919 is a deficient number, since it is larger than the sum of its proper divisors (986525057).

30551133919 is an frugal number, since it uses more digits than its factorization.

30551133919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62817 (or 31424 counting only the distinct ones).

The product of its (nonzero) digits is 54675, while the sum is 40.

The spelling of 30551133919 in words is "thirty billion, five hundred fifty-one million, one hundred thirty-three thousand, nine hundred nineteen".