30721702078969 has 48 divisors (see below), whose sum is σ = 34913883676672. Its totient is φ = 26995407516000.

The previous prime is 30721702078919. The next prime is 30721702078993. The reversal of 30721702078969 is 96987020712703.

It is not a de Polignac number, because 30721702078969 - 2¹³ = 30721702070777 is a prime.

It is a super-2 number, since 2×30721702078969² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30721702078909) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 788302654 + ... + 788341624.

Almost surely, 2^{30721702078969} is an apocalyptic number.

It is an amenable number.

30721702078969 is a deficient number, since it is larger than the sum of its proper divisors (4192181597703).

30721702078969 is a wasteful number, since it uses less digits than its factorization.

30721702078969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40610 (or 40599 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 61.

The spelling of 30721702078969 in words is "thirty trillion, seven hundred twenty-one billion, seven hundred two million, seventy-eight thousand, nine hundred sixty-nine".