83577456452381 has 4 divisors (see below), whose sum is σ = 84635398939200. Its totient is φ = 82519513965564.

The previous prime is 83577456452377. The next prime is 83577456452407. The reversal of 83577456452381 is 18325465477538.

It is a happy number.

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 not a de Polignac number, because 83577456452381 - 2² = 83577456452377 is a prime.

It is a super-2 number, since 2×83577456452381² (a number of 29 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 (83577456472381) 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, 528971243291 + ... + 528971243448.

It is an arithmetic number, because the mean of its divisors is an integer number (21158849734800).

Almost surely, 2^{83577456452381} is an apocalyptic number.

It is an amenable number.

83577456452381 is a deficient number, since it is larger than the sum of its proper divisors (1057942486819).

83577456452381 is a wasteful number, since it uses less digits than its factorization.

83577456452381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057942486818.

The product of its digits is 677376000, while the sum is 68.

The spelling of 83577456452381 in words is "eighty-three trillion, five hundred seventy-seven billion, four hundred fifty-six million, four hundred fifty-two thousand, three hundred eighty-one".