83781606983311 has 32 divisors (see below), whose sum is σ = 88431359385600. Its totient is φ = 79267188000000.

The previous prime is 83781606983213. The next prime is 83781606983317. The reversal of 83781606983311 is 11338960618738.

It is a cyclic number.

It is not a de Polignac number, because 83781606983311 - 2⁷ = 83781606983183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83781606983317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253756386 + ... + 254086336.

It is an arithmetic number, because the mean of its divisors is an integer number (2763479980800).

Almost surely, 2^{83781606983311} is an apocalyptic number.

83781606983311 is a deficient number, since it is larger than the sum of its proper divisors (4649752402289).

83781606983311 is a wasteful number, since it uses less digits than its factorization.

83781606983311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330951.

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 83781606983311 in words is "eighty-three trillion, seven hundred eighty-one billion, six hundred six million, nine hundred eighty-three thousand, three hundred eleven".