83400458381 has 4 divisors (see below), whose sum is σ = 83431270272. Its totient is φ = 83369646492.

The previous prime is 83400458363. The next prime is 83400458411. The reversal of 83400458381 is 18385400438.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83400458381 is a prime.

It is a super-2 number, since 2×83400458381² (a number of 23 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 (83400458881) 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, 15401885 + ... + 15407298.

It is an arithmetic number, because the mean of its divisors is an integer number (20857817568).

Almost surely, 2^83400458381 is an apocalyptic number.

It is an amenable number.

83400458381 is a deficient number, since it is larger than the sum of its proper divisors (30811891).

83400458381 is a wasteful number, since it uses less digits than its factorization.

83400458381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30811890.

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 83400458381 in words is "eighty-three billion, four hundred million, four hundred fifty-eight thousand, three hundred eighty-one".