30756493977 has 16 divisors (see below), whose sum is σ = 46179840000. Its totient is φ = 18038998800.

The previous prime is 30756493951. The next prime is 30756493981. The reversal of 30756493977 is 77939465703.

It is a happy number.

It is not a de Polignac number, because 30756493977 - 2¹⁹ = 30755969689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30756493977.

It is not an unprimeable number, because it can be changed into a prime (30756493907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15031477 + ... + 15033522.

It is an arithmetic number, because the mean of its divisors is an integer number (2886240000).

Almost surely, 2^30756493977 is an apocalyptic number.

It is an amenable number.

30756493977 is a deficient number, since it is larger than the sum of its proper divisors (15423346023).

30756493977 is a wasteful number, since it uses less digits than its factorization.

30756493977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30065044.

The product of its (nonzero) digits is 30005640, while the sum is 60.

The spelling of 30756493977 in words is "thirty billion, seven hundred fifty-six million, four hundred ninety-three thousand, nine hundred seventy-seven".