83865014388 has 168 divisors, whose sum is σ = 222714856448. Its totient is φ = 27617925888.

The previous prime is 83865014383. The next prime is 83865014393. The reversal of 83865014388 is 88341056838.

83865014388 is a `hidden beast` number, since 83 + 86 + 50 + 1 + 438 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (83865014383) and next prime (83865014393).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83865014383) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 160353495 + ... + 160354017.

Almost surely, 2^83865014388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83865014388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111357428224).

83865014388 is an abundant number, since it is smaller than the sum of its proper divisors (138849842060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83865014388 is a wasteful number, since it uses less digits than its factorization.

83865014388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 83865014388 in words is "eighty-three billion, eight hundred sixty-five million, fourteen thousand, three hundred eighty-eight".