30012049657 has 2 divisors, whose sum is σ = 30012049658. Its totient is φ = 30012049656.

The previous prime is 30012049637. The next prime is 30012049663. The reversal of 30012049657 is 75694021003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20144408761 + 9867640896 = 141931^2 + 99336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30012049657 is a prime.

It is a super-2 number, since 2×30012049657² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30012049637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006024828 + 15006024829.

It is an arithmetic number, because the mean of its divisors is an integer number (15006024829).

Almost surely, 2^30012049657 is an apocalyptic number.

It is an amenable number.

30012049657 is a deficient number, since it is larger than the sum of its proper divisors (1).

30012049657 is an equidigital number, since it uses as much as digits as its factorization.

30012049657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 30012049657 in words is "thirty billion, twelve million, forty-nine thousand, six hundred fifty-seven".