30037398407981 has 4 divisors (see below), whose sum is σ = 30037410127200. Its totient is φ = 30037386688764.

The previous prime is 30037398407953. The next prime is 30037398408007. The reversal of 30037398407981 is 18970489373003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30037398407981 is a prime.

It is a super-2 number, since 2×30037398407981² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30037398407921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179801 + ... + 7752878.

It is an arithmetic number, because the mean of its divisors is an integer number (7509352531800).

Almost surely, 2^{30037398407981} is an apocalyptic number.

It is an amenable number.

30037398407981 is a deficient number, since it is larger than the sum of its proper divisors (11719219).

30037398407981 is an equidigital number, since it uses as much as digits as its factorization.

30037398407981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11719218.

The product of its (nonzero) digits is 27433728, while the sum is 62.

The spelling of 30037398407981 in words is "thirty trillion, thirty-seven billion, three hundred ninety-eight million, four hundred seven thousand, nine hundred eighty-one".