34623357781 has 32 divisors (see below), whose sum is σ = 37901001600. Its totient is φ = 31552926720.

The previous prime is 34623357761. The next prime is 34623357803. The reversal of 34623357781 is 18775332643.

It is a cyclic number.

It is not a de Polignac number, because 34623357781 - 2⁹ = 34623357269 is a prime.

It is a super-2 number, since 2×34623357781² (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 (34623357731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5467425 + ... + 5473753.

It is an arithmetic number, because the mean of its divisors is an integer number (1184406300).

Almost surely, 2^34623357781 is an apocalyptic number.

It is an amenable number.

34623357781 is a deficient number, since it is larger than the sum of its proper divisors (3277643819).

34623357781 is a wasteful number, since it uses less digits than its factorization.

34623357781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6549.

The product of its digits is 2540160, while the sum is 49.

The spelling of 34623357781 in words is "thirty-four billion, six hundred twenty-three million, three hundred fifty-seven thousand, seven hundred eighty-one".